Android 透明状态栏和操作栏

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最佳答案

I'm developing an app that needs to look similar in all devices with >= API14 when it comes to actionbar and statusbar customization. I've finally found a solution and since it took a bit of my time I'll share it to save some of yours. We start by using an appcompat-21 dependency.

Transparent Actionbar:

values/styles.xml:

<style name="AppTheme" parent="Theme.AppCompat.Light">
...
</style>


<style name="AppTheme.ActionBar.Transparent" parent="AppTheme">
<item name="android:windowContentOverlay">@null</item>
<item name="windowActionBarOverlay">true</item>
<item name="colorPrimary">@android:color/transparent</item>
</style>


<style name="AppTheme.ActionBar" parent="AppTheme">
<item name="windowActionBarOverlay">false</item>
<item name="colorPrimary">@color/default_yellow</item>
</style>

values-v21/styles.xml:

<style name="AppTheme" parent="Theme.AppCompat.Light">
...
</style>


<style name="AppTheme.ActionBar.Transparent" parent="AppTheme">
<item name="colorPrimary">@android:color/transparent</item>
</style>


<style name="AppTheme.ActionBar" parent="AppTheme">
<item name="colorPrimaryDark">@color/bg_colorPrimaryDark</item>
<item name="colorPrimary">@color/default_yellow</item>
</style>

Now you can use these themes in your AndroidManifest.xml to specify which activities will have a transparent or colored ActionBar:

    <activity
android:name=".MyTransparentActionbarActivity"
android:theme="@style/AppTheme.ActionBar.Transparent"/>


<activity
android:name=".MyColoredActionbarActivity"
android:theme="@style/AppTheme.ActionBar"/>

enter image description here

Note: in API>=21 to get the Actionbar transparent you need to get the Statusbar transparent too, otherwise will not respect your colour styles and will stay light-grey.

Transparent Statusbar (only works with API>=19):
This one it's pretty simple just use the following code:

protected void setStatusBarTranslucent(boolean makeTranslucent) {
if (makeTranslucent) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
} else {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
}
}

But you'll notice a funky result: enter image description here

This happens because when the Statusbar is transparent the layout will use its height. To prevent this we just need to:

SOLUTION ONE:
Add this line android:fitsSystemWindows="true" in your layout view container of whatever you want to be placed bellow the Actionbar:

    ...
<LinearLayout
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
</LinearLayout>
...

SOLUTION TWO:
Add a few lines to our previous method:

protected void setStatusBarTranslucent(boolean makeTranslucent) {
View v = findViewById(R.id.bellow_actionbar);
if (v != null) {
int paddingTop = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT ? MyScreenUtils.getStatusBarHeight(this) : 0;
TypedValue tv = new TypedValue();
getTheme().resolveAttribute(android.support.v7.appcompat.R.attr.actionBarSize, tv, true);
paddingTop += TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics());
v.setPadding(0, makeTranslucent ? paddingTop : 0, 0, 0);
}


if (makeTranslucent) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
} else {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
}
}

Where R.id.bellow_actionbar will be the layout container view id of whatever we want to be placed bellow the Actionbar:

...
<LinearLayout
android:id="@+id/bellow_actionbar"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
</LinearLayout>
...

enter image description here

So this is it, it think I'm not forgetting something. In this example I didn't use a Toolbar but I think it'll have the same result. This is how I customize my Actionbar:

@Override
protected void onCreate(Bundle savedInstanceState) {
View vg = getActionBarView();
getWindow().requestFeature(vg != null ? Window.FEATURE_ACTION_BAR : Window.FEATURE_NO_TITLE);


super.onCreate(savedInstanceState);
setContentView(getContentView());


if (vg != null) {
getSupportActionBar().setCustomView(vg, new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
getSupportActionBar().setDisplayShowCustomEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(false);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayUseLogoEnabled(false);
}
setStatusBarTranslucent(true);
}

Note: this is an abstract class that extends ActionBarActivity
Hope it helps!

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It supports after KITKAT. Just add following code inside onCreate method of your Activity. No need any modifications to Manifest file.

 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
Window w = getWindow(); // in Activity's onCreate() for instance
w.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}

小开

Just add these lines of code to your activity/fragment java file:

getWindow().setFlags(
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
);