Welcome. This library was designed to solve a personal problem with my apps, I use AppCompat to use Material theming on versions of Android below Lollipop. However, AppCompat doesn't theme AlertDialogs to use Material on pre-Lollipop. This library allows you to use a consistently Material themed dialog on all versions of Android, along with specific customizations that make it easier to brand the dialog.
The code you see below is also found in the sample project. You can download a APK of the sample here: https://github.com/afollestad/material-dialogs/blob/master/sample/sample.apk. The sample's also available on Google Play: https://play.google.com/store/apps/details?id=com.afollestad.materialdialogssample.
Easily reference the library in your Android projects using this dependency in your module's build.gradle file:
dependencies {
compile 'com.afollestad:material-dialogs:0.0.2'
}Make sure you're using the jCenter repository, Android Studio uses this repository by default.
Check back here frequently for version updates.
Here's a basic example that mimics the dialog you see on Google's Material design guidelines
(here: http://www.google.com/design/spec/components/dialogs.html#dialogs-usage). Note that you can
always substitute literal strings and string resources for methods that take strings, the same goes
for color resources (e.g. titleColor and titleColorRes).
new MaterialDialog.Builder(this)
.title("Use Google's Location Services?")
.content("Let Google help apps determine location. This means sending anonymous location data to Google, even when no apps are running.")
.theme(Theme.LIGHT) // the default is light, so you don't need this line
.positiveText("Agree") // the default is 'OK'
.negativeText("Disagree") // leaving this line out will remove the negative button
.build()
.show();On Lollipop (API 21), the Material dialog will automatically match the positiveColor (which is used on the
positive action button) to the colorAccent attribute of your styles.xml theme.
If you have multiple action buttons that together are too wide to fit on one line, the dialog will stack the buttons to be vertically orientated.
new MaterialDialog.Builder(this)
.title("Use Google's Location Services?")
.content("Let Google help apps determine location. This means sending anonymous location data to Google, even when no apps are running.")
.positiveText("Turn on speed boost right now!")
.negativeText("No thanks")
.build()
.show();On a tablet, this will be no different that the basic example. On a smaller phone, they will stack.
You can specify neutral text in addition to the positive and negative text. It will show the neutral action on the far left.
new MaterialDialog.Builder(this)
.title("Use Google's Location Services?")
.content("Let Google help apps determine location. This means sending anonymous location data to Google, even when no apps are running.")
.positiveText("Agree")
.negativeText("Disagree")
.neutralText("More info")
.build()
.show();To know when the user selects an action button, you set a callback. There's three variations of the callback for the action buttons:
new MaterialDialog.Builder(this)
.callback(new MaterialDialog.SimpleCallback() {
@Override
public void onPositive(MaterialDialog dialog) {
}
});
new MaterialDialog.Builder(this)
.callback(new MaterialDialog.Callback() {
@Override
public void onPositive(MaterialDialog dialog) {
}
@Override
public void onNegative(MaterialDialog dialog) {
}
});
new MaterialDialog.Builder(this)
.callback(new MaterialDialog.FullCallback() {
@Override
public void onPositive(MaterialDialog dialog) {
}
@Override
public void onNegative(MaterialDialog dialog) {
}
@Override
public void onNeutral(MaterialDialog dialog) {
}
});If autoDismiss is turned off, then you must manually dismiss the dialog in these callbacks. Auto dismiss is on by default.
Creating a list dialog only requires passing in an array of strings. The callback (itemsCallback) is
also very simple.
new MaterialDialog.Builder(this)
.title("Social Networks")
.items(new String[]{"Twitter", "Google+", "Instagram", "Facebook"})
.itemsCallback(new MaterialDialog.ListCallback() {
@Override
public void onSelection(MaterialDialog dialog, View view, int which, String text) {
}
})
.build()
.show();If autoDismiss is turned off, then you must manually dismiss the dialog in the callback. Auto dismiss is on by default.
The ItemProcessor API can be used to use custom list item layouts. See the sample project for an example.
Single choice list dialogs are almost identical to regular list dialogs. The only difference is that
you use itemsCallbackSingleChoice to set a callback rather than itemsCallback. That signals the dialog to
display radio buttons next to list items.
This also makes it so that an action button has to be pressed, tapping a list item won't dismiss the dialog. Note that this means the positive action button callback will be overridden if you specify one.
new MaterialDialog.Builder(this)
.title("Social Networks")
.items(new String[]{"Twitter", "Google+", "Instagram", "Facebook"})
.itemsCallbackSingleChoice(-1, new MaterialDialog.ListCallback() {
@Override
public void onSelection(MaterialDialog dialog, View view, int which, String text) {
}
})
.positiveText("Choose")
.build()
.show();If you want to preselect an item, pass an index 0 or greater in place of -1 in itemsCallbackSingleChoice().
If autoDismiss is turned off, then you must manually dismiss the dialog in the callback. Auto dismiss is on by default.
Multiple choice list dialogs are almost identical to regular list dialogs. The only difference is that
you use itemsCallbackMultiChoice to set a callback rather than itemsCallback. That signals the dialog to
display check boxes next to list items, and the callback can return multiple selections.
This also makes it so that an action button has to be pressed, tapping a list item won't dismiss the dialog. Note that this means the positive action button callback will be overridden if you specify one.
new MaterialDialog.Builder(this)
.title("Social Networks")
.items(new String[]{"Twitter", "Google+", "Instagram", "Facebook"})
.itemsCallbackMultiChoice(null, new MaterialDialog.ListCallbackMulti() {
@Override
public void onSelection(MaterialDialog dialog, Integer[] which, String[] text) {
}
})
.positiveText("Choose")
.build()
.show();If you want to preselect item(s), pass an array of indices in place of null in itemsCallbackSingleChoice().
For an example, new Integer[] { 2, 5 }. If autoDismiss is turned off, then you must manually
dismiss the dialog in the callback. Auto dismiss is on by default.
Custom views are very easy to implement. To match the dialog show here: http://www.google.com/design/spec/components/dialogs.html#dialogs-behavior
new MaterialDialog.Builder(this)
.title("Google Wifi")
.positiveText("Agree")
.customView(R.layout.custom_view)
.positiveText("Connect")
.positiveColor(Color.parseColor("#03a9f4"))
.build()
.show();Where custom_view.xml contains a LinearLayout of TextViews, an EditText, and a CheckBox. You'll see in
the sample project that you don't need to add padding to the edges of your custom view, the dialog
already does that. Note that your custom view's top and bottom
margins will be overrided; if your custom view is a ViewGroup (e.g. a LinearLayout or RelativeLayout),
then the first and last child's top and bottom will be overided.
MaterialDialog inserts your view into a ScrollView and displays a divider above the action buttons,
so don't wrap your custom view in a scroll view and don't worry about it being too long or needing a divider.
However, you should avoid making any content that wouldn't belong in a dialog because of its size.
Before Lollipop, theming AlertDialogs was basically impossible without using reflection and custom drawables. Since KitKat, Android became more color neutral but AlertDialogs continued to use Holo Blue for the title and title divider. Lollipop has improved even more, with no colors in the dialog by default other than the action buttons. This library makes theming even easier. Here's a basic example:
final int materialRed500 = Color.parseColor("#D50000");
new MaterialDialog.Builder(this)
.title("Use Google's Location Services?")
.content("Let Google help apps determine location. This means sending anonymous location data to Google, even when no apps are running.")
.positiveText("Agree")
.negativeText("Disagree")
.positiveColor(materialRed500)
.negativeColor(materialRed500)
.neutralColor(materialRed500)
.titleAlignment(Alignment.CENTER)
.titleColor(materialRed500)
.theme(Theme.DARK)
.build()
.show();To see more colors that fit the Material design palette, see this page: http://www.google.com/design/spec/style/color.html#color-color-palette
If you need to access a View in the custom view set to a MaterialDialog, you can use getCustomView() of
MaterialDialog. This is especially useful if you pass a layout resource to the Builder.
MaterialDialog dialog = //... initialization via the builder ...
View view = dialog.getCustomView();If you want to get a reference to one of the dialog action buttons (e.g. to enable or disable buttons):
MaterialDialog dialog = //... initialization via the builder ...
View negative = dialog.getActionButton(DialogAction.NEGATIVE);
View neutral = dialog.getActionButton(DialogAction.NEUTRAL);
View positive = dialog.getActionButton(DialogAction.POSITIVE);If you want to update the title of a dialog action button (you can pass a string resource ID in place of the literal string, too):
MaterialDialog dialog = //... initialization via the builder ...
dialog.setActionButton(DialogAction.NEGATIVE, "New Title");If you want to forcefully hide the action buttons:
MaterialDialog dialog new MaterialDialog.Builder(this)
// ... other initialization
.hideActions()
.build();
dialog.show();
// OR
dialog.hideActions();
dialog.showActions();If you don't want the dialog to automatically be dismissed when an action button is pressed or when the user selects a list item:
MaterialDialog dialog new MaterialDialog.Builder(this)
// ... other initialization
.autoDismiss(false)
.build()
.show();
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