LightAndVolumeController.java 文件源码

protected void showDialog(Context context) {
    final WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    int h = getNavbarHeight(context);
    int w = WindowManager.LayoutParams.MATCH_PARENT;
    WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams(w, h, WindowManager.LayoutParams.TYPE_TOAST, 0, PixelFormat.TRANSLUCENT);
    layoutParams.gravity = Gravity.BOTTOM;

    ViewGroup viewGroup;
    if (mType == LIGHT) {
        viewGroup = getLightPanel(context);
    } else {
        viewGroup = getVolumePanel(context);
    }

    if (lightPanel != null && lightPanel.isAttachedToWindow()) {
        wm.removeView(lightPanel);
    }
    if (volumePanel != null && volumePanel.isAttachedToWindow()) {
        wm.removeView(volumePanel);
    }

    wm.addView(viewGroup, layoutParams);
}