如何使用 Android snackbar 弹出整个片段布局

How to pop up whole fragment layout with Android snackbar

我没有任何浮动按钮,但我想在显示小吃栏消息时弹出整个布局。为此,我将片段包装到 CoordinatorLayout 中,如下所示:

 <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/coordinatorLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <FrameLayout
        android:id="@+id/container_for_fragments"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"/>

</android.support.design.widget.CoordinatorLayout>

container_for_fragments 托管我的片段。我声明 CoordinatorLayout 然后像这样使用它:

       Snackbar snackbar = Snackbar.make(myCoordinatorLayout, "Hello", Snackbar.LENGTH_LONG);
       snackbar.show();

我得到:

有没有办法在出现 snackbar 时弹出整个片段?

写下你自己的行为,对显示做出反应 Snackbar:

public class FrameLayoutBehavior extends CoordinatorLayout.Behavior<FrameLayout> {

    private float mFrTranslationY;

    public FrameLayoutBehavior (Context context, AttributeSet attrs) {
        super();
    }

    @Override
    public boolean layoutDependsOn(final CoordinatorLayout parent, final FrameLayout child, final View dependency) {
        return dependency instanceof Snackbar.SnackbarLayout;
    }

    @Override
    public boolean onDependentViewChanged(final CoordinatorLayout parent, final FrameLayout child, final View dependency) {
        if (dependency instanceof Snackbar.SnackbarLayout) {
            updateFabTranslationForSnackbar(parent, child, dependency);
            ViewCompat.setTranslationY(child, mFrTranslationY);
        }
        return false;
    }

    @Override
    public void onDependentViewRemoved(final CoordinatorLayout parent, final FrameLayout child, final View dependency) {
        super.onDependentViewRemoved(parent, child, dependency);
    }

    private void updateFabTranslationForSnackbar(CoordinatorLayout parent, final FrameLayout fab, View snackbar) {
        mFrTranslationY = getFabTranslationYForSnackbar(parent, fab, snackbar);
    }

    private float getFabTranslationYForSnackbar(CoordinatorLayout parent, FrameLayout fab, View snackbar) {
        float minOffset = 0;
        minOffset = Math.min(minOffset, ViewCompat.getTranslationY(snackbar) - snackbar.getHeight());
        return minOffset;
    }
}

然后将参数 app:layout_behavior 添加到您的 FrameLayout。当 FrameLayoutFragment 替换时,行为可能会丢失。然后你必须添加:

@CoordinatorLayout.DefaultBehavior(FrameLayoutBehavior.Behavior.class)

就在您片段的 class 声明上方。