下拉關閉一個Activity：Pull Back Layout

下拉關閉一個Activity。

下載

repositories {
    // ...
    maven { url "https://jitpack.io" }
}

dependencies {
    // ... support library ...
    // ...
    compile 'com.github.oxoooo:pull-back-layout:1.0.0'
}

使用

You may refer to one of our apps that already using this library: mr-mantou-android

1. Make your Activity translucent by adding these two lines to your theme:

<style name="AppTheme" ...>
    <!-- ... -->

    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowIsTranslucent">true</item>

    <!-- also translucent system ui -- suggested but not required -->
    <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowTranslucentNavigation">true</item>
</style>

  2.Wrapsooo.oxo.library.widget.PullBackLayoutaround yourImageVieworViewPager:

<ooo.oxo.library.widget.PullBackLayout
    android:id="@+id/puller"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</ooo.oxo.library.widget.PullBackLayout>

Set a callback:

public class ViewerActivity extends AppCompatActivity implements PullBackLayout.Callback {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        /* ... */
        puller.setCallback(this);
    }

    @Override
    public void onPullStart() {
        // fade out Action Bar ...
        // show Status Bar ...
    }

    @Override
    public void onPull(float progress) {
        // set the opacity of the window's background
    }

    @Override
    public void onPullCancel() {
        // fade in Action Bar
    }

    @Override
    public void onPullComplete() {
        supportFinishAfterTransition();
    }

}

項目主頁：http://www.baiduhome.net/lib/view/home/1444985332497