具有动画的WindowManager（可以吗？）

  • Z时代
  • 2024-01-10
  • 分类：问答

有什么方法可以使用Animation在Android的项目中使用WindowManager扩展视图吗？即使使用网站中的示例，我也做不到！我使用了许多示例，但没有一个有效！

public BannerLayout(Activity activity, final Context context) {
    super(context);
    this.context = context;
    final WindowManager.LayoutParams params = new WindowManager.LayoutParams( 
            WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
            WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | 
            WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
            PixelFormat.TRANSLUCENT);
    wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    this.popupLayout = (RelativeLayout) inflater.inflate(R.layout.popup_activity, null);
    this.popupLayout.setVisibility(GONE);
    this.setActive(false);
    wm.addView(this.popupLayout, params);
    context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
private void show(){
    Animation in = AnimationUtils.loadAnimation(this.context, android.R.anim.fade_in);
    this.popupLayout.setAnimation(in);
    this.setActive(true);
    this.popupLayout.setVisibility(VISIBLE);
}

回答：

我不确定您的任务的确切要求，但是有两种方法可以向窗口提供动画：

  1. 用法WindowManager.LayoutParams.windowAnimations如下：

    params.windowAnimations = android.R.style.Animation_Translucent;

  2. 添加附加的“容器”视图，因为WindowManager它不是真实的ViewGroup，因此添加视图的普通动画无法使用。已经问过这个问题，但是缺少代码。我将通过以下方式应用它：

    public class BannerLayout extends View {
    private final Context mContext;
    private final ViewGroup mPopupLayout;
    private final ViewGroup mParentView;
    public BannerLayout(Activity activity, final Context context) {
        super(context);
        mContext = context;
        final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN |
                        WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
                PixelFormat.TRANSLUCENT);
        final WindowManager mWinManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mPopupLayout = (RelativeLayout) inflater.inflate(R.layout.popup_activity, null);
        mPopupLayout.setVisibility(GONE);
        params.width = ActionBar.LayoutParams.WRAP_CONTENT;
        params.height = ActionBar.LayoutParams.WRAP_CONTENT;
        // Default variant
        // params.windowAnimations = android.R.style.Animation_Translucent;
        mParentView = new FrameLayout(mContext);
        mWinManager.addView(mParentView, params);
        mParentView.addView(mPopupLayout);
        mPopupLayout.setVisibility(GONE);
    }
    /**
     * Shows view
     */
    public void show(){
        final Animation in = AnimationUtils.loadAnimation(this.mContext, android.R.anim.fade_in);
        in.setDuration(2000);
        mPopupLayout.setVisibility(VISIBLE);
        mPopupLayout.startAnimation(in);
    }
    /**
     * Hides view
     */
    public void hide() {
        mPopupLayout.setVisibility(GONE);
    }

    }

以上是 具有动画的WindowManager（可以吗？） 的全部内容， 来源链接： utcz.com/qa/406484.html

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