使用TranslateAnimation后无法完全查看视图

Question

我曾经使用TranslateAnimation过并在视图中上下滑动.

但是,我意识到,即使在我向下滑动视图并使用View.GONE其可见性后,视图仍然能够接收触摸事件.

您可以通过单击按钮使橙色视图从屏幕底部消失来产生相同的问题.然后,当您单击屏幕底部时,您将意识到仍然会触发自定义视图的触摸事件.

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        int color = getResources().getColor(android.R.color.holo_orange_light);
        // construct the RelativeLayout
        final RelativeLayout customView = new RelativeLayout(this) {
            @Override
            public boolean onTouchEvent(MotionEvent event) {
                this.setPressed(true);
                Log.i("CHEOK", "OH NO! TOUCH!!!!");
                return super.onTouchEvent(event);
            }
        };
        customView.setBackgroundColor(color);

        final FrameLayout frameLayout = (FrameLayout)this.findViewById(R.id.frameLayout); 
        frameLayout.addView(customView, new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, 100, Gravity.BOTTOM));
        customView.setVisibility(View.GONE);


        Button button = (Button)this.findViewById(R.id.button1);
        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                if (customView.getVisibility() != View.VISIBLE) {
                    // Slide up!
                    TranslateAnimation anim=new TranslateAnimation(0,0,100,0);
                    anim.setFillAfter(true);
                    anim.setDuration(200);

                    Log.i("CHEOK", "VISIBLE!!!");
                    customView.setVisibility(View.VISIBLE);         
                    customView.setAnimation(anim);   
                    customView.setEnabled(true);
                } else {
                    // Slide down!
                    TranslateAnimation anim=new TranslateAnimation(0,0,0,100);
                    anim.setFillAfter(true);
                    anim.setDuration(200);            

                    // HELPME : Not sure why, after I hide the view by sliding it down,
                    // making it View.GONE and setEnabled(false), it still able to 
                    // receive touch event.
                    Log.i("CHEOK", "GONE!!!");
                    customView.setVisibility(View.GONE);
                    customView.setAnimation(anim);
                    customView.setEnabled(false);
                }

            }

        });
    }

}

可以在此处找到演示此问题的完整源代码:

https://www.dropbox.com/s/1101dm885fn5hzq/animator_bug.zip

在我将其滑下之后,如何让我的自定义视图不接收触摸事件？

Answer 1

我不清楚为什么你使用setAnimation()而不是startAnimation()因为你没有设置动画的开始时间.

另一方面,我发现在具有相关动画的情况下将视图设置为GONE并不会使其真正"消失".相反,你必须首先摆脱动画使用clearAnimation().

所以,这样的事情:

public void onClick(View v) {
    if (customView.getVisibility() != View.VISIBLE) {
        // Slide up!
        TranslateAnimation anim=new TranslateAnimation(0,0,100,0);
        anim.setFillAfter(true);
        anim.setDuration(200);

        customView.setVisibility(View.VISIBLE);         
        customView.setEnabled(true);
        customView.startAnimation(anim);   
    } else {
        // Slide down!
        TranslateAnimation anim=new TranslateAnimation(0,0,0,100);
        anim.setFillAfter(true);
        anim.setDuration(200);
        anim.setAnimationListener(new AnimationListener() {
            @Override
            public void onAnimationEnd(Animation animation) {
                customView.clearAnimation();
                customView.setVisibility(View.GONE);
                customView.setEnabled(false);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                // nothing to do
            }

            @Override
            public void onAnimationStart(Animation animation) {
                // nothing to do
            }
        }
    }
}

我不记得,但您可能需要post()的内容onAnimationEnd(),而不是立即运行的代码,使其生效正常.