udacity/advanced_android_development

Repo for the Advanced Android App Development course

Advanced Android Sample App

Synchronizes weather information from OpenWeatherMap on Android Phones and Tablets. Used in the Udacity Advanced Android course.

Pre-requisites

Android SDK 21 or Higher Build Tools version 21.1.2 Android Support AppCompat 22.2.0 Android Support Annotations 22.2.0 Android Support GridLayout 22.2.0 Android Support CardView 22.2.0 Android Support Design 22.2.0 Android Support RecyclerView 22.2.0 Google Play Services GCM 7.0.0 BumpTech Glide 3.5.2

Getting Started

This sample uses the Gradle build system. To build this project, use the "gradlew build" command or use "Import Project" in Android Studio.

Support

• Google+ Community: https://plus.google.com/communities/105153134372062985968
• Stack Overflow: http://stackoverflow.com/questions/tagged/android

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.

License

Copyright 2015 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

advanced_android_development's Issues

Error:Execution failed for task ':app:mergeDebugResources'.

When trying to connect/register my Android app with GCM, I receive the following error during build
Error:Execution failed for task ':app:mergeDebugResources'.

[string/gcm_defaultSenderId] C:\Users\AndroidStudioProjects\Advanced_Android_Development\app\src\main\res\values\strings.xml [string/gcm_defaultSenderId] C:\Users\AndroidStudioProjects\Advanced_Android_Development\app\build\generated\res\google-services\debug\values\values.xml: Error: Duplicate resources

When I verified both the files,I noticed that the only commonality is gcm_defaultSenderId attribute present in both the files. The gcm_defaultSenderid needs to be changed in strings.xml to correctly build the package

Problem with pressed Button in AndroidStudio. I want to hold down on an imageview-button and drag it to an specific location, which should open afterwards an activity

Honestly I dont know how to proceed. I looked up some feeds on this website and on stackoverflow got a bit confused and dont know how to get it done. The imageview button should be dragged (while holding it down) at a specific location of an other imageview and as long as my pressed thumb relocates to the other image, a activity should be called. In an earlier version, the activity was functional but not while moving the button while it was held down by my thumb. Hopefully someone knows an answer for this (for me a very challenging question.)

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.view.GestureDetectorCompat;

import android.annotation.SuppressLint;
import android.app.RemoteInput;
import android.content.Intent;
import android.graphics.Rect;
import android.media.effect.Effect;
import android.os.Bundle;
import android.os.Handler;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private ImageView imageViewPlayButton, imageView2, imageView3, imageView4;
    private Rect imageRect;

    @SuppressLint("ClickableViewAccessibility")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        detectorCompat = new GestureDetectorCompat(this, new GestureListener());
        imageViewPlayButton = findViewById(R.id.PlayButton_Image_White_Base);
        imageView2 = findViewById(R.id.register_Icon_Base);
        imageView3 = findViewById(R.id.navigation_Background_Image_Register);
        imageView4 = findViewById(R.id.Login_Icon_Base);

        imageViewPlayButton.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
                    imageView2.setVisibility(View.VISIBLE);
                    imageView3.setVisibility(View.VISIBLE);
                    imageView4.setVisibility(View.VISIBLE);
                } else if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
                    imageView2.setVisibility(View.INVISIBLE);
                    imageView3.setVisibility(View.INVISIBLE);
                    imageView4.setVisibility(View.INVISIBLE);
                }
                return false;
            }
        });

    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {

        if (imageRect == null) {
            imageRect = new Rect();
            imageView2.getGlobalVisibleRect(imageRect);
        }
        int x = (int) event.getX();
        int y = (int) event.getY();
        if (imageRect.contains(x, y)) {
            openActivity();
        }

        return true;
    }

    private void openActivity() {
        Intent intent = new Intent(this, Register.class);
        startActivity(intent);
        overridePendingTransition(0, 0);
    }

}

app/build.gradle correction required

in app/build.gradle file

buildTypes.each {
it.buildConfigField 'String', 'OPEN_WEATHER_MAP_API_KEY', MyOpenWeatherMapApiKey

needs to be corrected.

The MyOpenWeatherMapApiKey should be specified within '"key"' i.e, '"actual_key"'

This may not not be an issue, but needs comment or correction in the source code else the buildconfig.Java will throw an error

NullPointerException in MyGcmListenerService

When the message is received from the server, the message is in a bundle which is converted to JSONObject. This process is creating a NullPointerException.

Instead of creating a JSONObject, we can extract the data directly from the the Bundle.

Can't compile. Some input files use or override a deprecated API.

Hi, I got this issue while compile.

The versions in build.gradle

    compileSdkVersion 21
    buildToolsVersion "21.1.2"

Android studio version 1.5.1

/Users/leicao/programming/android/Advanced_Android_Development/app/src/main/java/com/example/android/sunshine/app/sync/SunshineSyncAdapter.java:16: error: cannot find symbol
import android.content.SyncRequest;
        ^
  symbol:   variable f9db90bf5fb2d5c7c5e7141f0a7decef
  location: class BuildConfig
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error

 FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --info or --debug option to get more log output.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:compileDebugJavaWithJavac'.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:305)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:88)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
    at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:149)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:80)
    at org.gradle.tooling.internal.provider.BuildModelAction.run(BuildModelAction.java:43)
    at org.gradle.tooling.internal.provider.BuildModelAction.run(BuildModelAction.java:30)
    at org.gradle.tooling.internal.provider.ConfiguringBuildAction.run(ConfiguringBuildAction.java:119)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:36)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
    at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:47)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:35)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:24)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.StartStopIfBuildAndStop.execute(StartStopIfBuildAndStop.java:33)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:71)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:69)
    at org.gradle.util.Swapper.swap(Swapper.java:38)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:69)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:70)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.DaemonHygieneAction.execute(DaemonHygieneAction.java:39)
    at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:119)
    at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:46)
    at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:246)
    at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
Caused by: org.gradle.api.internal.tasks.compile.CompilationFailedException: Compilation failed; see the compiler error output for details.
    at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:44)
    at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:35)
    at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:97)
    at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:50)
    at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:36)
    at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:34)
    at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)
    at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:158)
    at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:138)
    at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:92)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactory.java:235)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:211)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory.java:222)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:200)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
    ... 55 more

Google Services plugin should be applied at the bottom and not at the top.

Hi,

I see that according to Google APIs documentation apply plugin: 'com.google.gms.google-services' should be added at the bottom of the file and not at the top.

Add dependencies for basic libraries required for the services you have enabled. This step requires that the apply plugin: 'com.google.gms.google-services' line be at the bottom of your app/build.gradle file so that no dependency collisions are introduced. You can see the result of this step by running ./gradlew :app:dependencies.

https://developers.google.com/android/guides/google-services-plugin

Can someone please take a look? I am not able to update to the latest Google Services API.

Doesn't work in android version 6.0.1

crashes pretty much immediatley after opening:
10-15 00:59:15.701 5096-5096/com.example.android.sunshine.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.android.sunshine.app, PID: 5096
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.android.sunshine.app/com.example.android.sunshine.app.MainActivity}: java.lang.SecurityException: uid 10058 cannot get secrets for accounts of type: sunshine.example.com
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3319)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415)
at android.app.ActivityThread.access$1100(ActivityThread.java:229)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7329)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.SecurityException: uid 10058 cannot get secrets for accounts of type: sunshine.example.com
at android.os.Parcel.readException(Parcel.java:1621)
at android.os.Parcel.readException(Parcel.java:1574)
at android.accounts.IAccountManager$Stub$Proxy.getPassword(IAccountManager.java:694)
at android.accounts.AccountManager.getPassword(AccountManager.java:334)
at com.example.android.sunshine.app.sync.SunshineSyncAdapter.getSyncAccount(SunshineSyncAdapter.java:607)
at com.example.android.sunshine.app.sync.SunshineSyncAdapter.initializeSyncAdapter(SunshineSyncAdapter.java:646)
at com.example.android.sunshine.app.MainActivity.onCreate(MainActivity.java:92)
at android.app.Activity.performCreate(Activity.java:6904)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415) 
at android.app.ActivityThread.access$1100(ActivityThread.java:229) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:7329) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 

Auto jump to DetailFragment in branch bonus_recyclerview_code

in your code, autoSelectView=true
in the method onLoadFinish() in Class ForecastFragment

updateEmptyView();
        if ( data.getCount() > 0 ) {
            mRecyclerView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    // Since we know we're going to get items, we keep the listener around until
                    // we see Children.
                    if (mRecyclerView.getChildCount() > 0) {
                        mRecyclerView.getViewTreeObserver().removeOnPreDrawListener(this);
                        int itemPosition = mForecastAdapter.getSelectedItemPosition();
                        if ( RecyclerView.NO_POSITION == itemPosition ) itemPosition = 0;
                        RecyclerView.ViewHolder vh = mRecyclerView.findViewHolderForAdapterPosition(itemPosition);
                        if ( null != vh && mAutoSelectView ) {
                            mForecastAdapter.selectView( vh );
                        }
                        return true;
                    }
                    return false;
                }
            });
        }

app will invoke onClick() method and jump to DetailActivity, is that right in logic？

Doesn't work under "N" preview 2.

crashes pretty much immediatley after opening (no interaction besides hitting launch button)

05-15 18:03:40.839 19870-19870/com.example.android.sunshine.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.android.sunshine.app, PID: 19870
android.view.InflateException: Binary XML file line #19: Binary XML file line #19: Error inflating class
Caused by: android.view.InflateException: Binary XML file line #19: Error inflating class
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:431)
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:717)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:785)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at com.example.android.sunshine.app.ForecastAdapter.onCreateViewHolder(ForecastAdapter.java:117)
at com.example.android.sunshine.app.ForecastAdapter.onCreateViewHolder(ForecastAdapter.java:39)
at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:5062)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4368)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4278)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1947)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1359)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1322)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:556)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2673)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:2971)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1000)
at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:710)
at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42)
at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:982)
at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:723)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1737)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1581)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1490)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1737)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1581)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1490)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
05-15 18:03:40.840 19870-19870/com.example.android.sunshine.app E/AndroidRuntime: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:699)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2265)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1995)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1192)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6217)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
at android.view.Choreographer.doCallbacks(Choreographer.java:670)
at android.view.Choreographer.doFrame(Choreographer.java:606)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:6066)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:770)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:660)
Caused by: android.content.res.Resources$NotFoundException: Drawable com.example.android.sunshine.app:drawable/touch_selector with resource ID #0x7f02006e
Caused by: android.content.res.Resources$NotFoundException: File res/drawable-v21/touch_selector.xml from drawable resource ID #0x7f02006e
at android.content.res.ResourcesImpl.loadDrawableForCookie(ResourcesImpl.java:681)
at android.content.res.ResourcesImpl.loadDrawable(ResourcesImpl.java:527)
at android.content.res.Resources.loadDrawable(Resources.java:855)
at android.content.res.TypedArray.getDrawable(TypedArray.java:924)
at android.view.View.(View.java:4158)
at android.view.ViewGroup.(ViewGroup.java:578)
at android.widget.FrameLayout.(FrameLayout.java:97)
at android.widget.FrameLayout.(FrameLayout.java:92)
at android.widget.FrameLayout.(FrameLayout.java:88)
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:431)
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:717)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:785)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at com.example.android.sunshine.app.ForecastAdapter.onCreateViewHolder(ForecastAdapter.java:117)
at com.example.android.sunshine.app.ForecastAdapter.onCreateViewHolder(ForecastAdapter.java:39)
at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:5062)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4368)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4278)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1947)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1359)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1322)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:556)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2673)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:2971)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1000)
05-15 18:03:40.843 19870-19870/com.example.android.sunshine.app E/AndroidRuntime: at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:710)
at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42)
at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:982)
at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:723)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1737)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1581)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1490)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1737)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1581)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1490)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:699)
at android.view.View.layout(View.java:17450)
at android.view.ViewGroup.layout(ViewGroup.java:5540)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2265)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1995)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1192)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6217)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
at android.view.Choreographer.doCallbacks(Choreographer.java:670)
at android.view.Choreographer.doFrame(Choreographer.java:606)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:6066)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:770)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:660)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.jumpToCurrentState()' on a null object reference
at android.graphics.drawable.LayerDrawable.jumpToCurrentState(LayerDrawable.java:1424)
at android.graphics.drawable.RippleDrawable.jumpToCurrentState(RippleDrawable.java:213)
at android.graphics.drawable.RippleDrawable.setVisible(RippleDrawable.java:335)
at android.graphics.drawable.DrawableContainer.initializeDrawableForDisplay(DrawableContainer.java:519)
at android.graphics.drawable.DrawableContainer.selectDrawable(DrawableContainer.java:470)
at android.graphics.drawable.StateListDrawable.onStateChange(StateListDrawable.java:104)
at android.graphics.drawable.StateListDrawable.inflate(StateListDrawable.java:118)
at android.graphics.drawable.DrawableInflater.inflateFromXml(DrawableInflater.java:130)
05-15 18:03:40.843 19870-19870/com.example.android.sunshine.app E/AndroidRuntime: at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:1165)
at android.graphics.drawable.Drawable.createFromXml(Drawable.java:1138)
at android.content.res.ResourcesImpl.loadDrawableForCookie(ResourcesImpl.java:671)
... 79 more

Great

AppBar Has No Color Back From Detail View

Hey. There seems to be a bug which is very annoying. When you scroll up, the app bar disappears. Then you tap on an item to go to the Detail View. And when you hit the back button to navigate back(at this moment, the app bar is still hidden

), and then you scroll down, the app bar would appear. The problem is: the app bar has no background color. When you scroll a little bit more, the background color would appear. Is there a way to fix this issue? Thanks.

404 response causes a java.io.FileNotFoundException

In exercise 2.0.5, and then in the solution 2.0.6:

When testing for an unknown location that should give a 404 response, the code in it's current state in the SunshineSyncAdapter will cause a FileNotFoundException.

At line 160

InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();

getInputStream will throw a FileNotFoundException if the response code is 400 or higher. This is due to the way input streams are handled by HttpURLConnection.

In Response Handling we are told the following:

If the HTTP response indicates that an error occurred, getInputStream() will throw an IOException. Use getErrorStream() to read the error response. The headers can be read in the normal way using getHeaderFields(),

To handle this properly the code could be changed to

InputStream inputStream = urlConnection.getErrorStream();
	if (inputStream == null) {
		inputStream = urlConnection.getInputStream();
    }

This way if there is an error in the stream it can be handled properly and work in the way that it is intended to.

The wallpaper implemented is not shown as a select option in Wallpapers section on my Galaxy S4 upgraded to Android 5.0.1

I am not able to see the option to select Sunshine's wallpaper on my Galaxy S4 which is upgraded to Android 5.0.1. And same applies to the Nexus 5 API 21 Emulator. I do not know how to enable Sunshine's wallpaper in Wallpapers section for its selection to work.

Guide me or tell me if Android 5.0.1 has some problem.

Custom attribute namespace change in 23.3.0

If you update your build config to use version 23.3.0 of the android libraries, you also need to change the namespace used for the custom attribute minLength in prefs_general.xml:

Here is the diff:

diff --git a/app/src/main/res/xml/pref_general.xml b/app/src/main/res/xml/pref_general.xml
index a8b175b..92c4d04 100644
--- a/app/src/main/res/xml/pref_general.xml
+++ b/app/src/main/res/xml/pref_general.xml
@@ -16,7 +16,7 @@
-->
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android"

• xmlns:custom="http://schemas.android.com/apk/res/com.example.android.sunshine.app"
• xmlns:custom="http://schemas.android.com/apk/lib/com.example.android.sunshine.app"
  android:layout_width="match_parent"
  android:layout_height="match_parent">