我正在尝试为我的应用程序构建一个启动屏幕。当我试图更改imagesview属性并设置动画时,收到一个错误。
我已经测试过runonuithread和hadler,但是在这两种情况下没有错误,屏幕上也没有显示任何内容,并且在延迟(正是我在代码中指定的)之后,程序活动切换到下一个活动这是我的代码:

@Override
public void run(){
    try {
            TranslateAnimation moveLefttoRight = new TranslateAnimation(500, 0, 0, 0);
            moveLefttoRight.setDuration(5000);
            moveLefttoRight.setFillAfter(true);
            im.startAnimation(moveLefttoRight);//im is an image view
            SystemClock.sleep(6000);
            TranslateAnimation moveRighttoLeft = new TranslateAnimation(0, 100, 0, 0);
            moveRighttoLeft.setDuration(1000);
            moveRighttoLeft.setFillAfter(true);
            im.startAnimation(moveRighttoLeft);
            SystemClock.sleep(6000);
            ScaleAnimation scale = new ScaleAnimation(0.3f, 1f, 0.3f, 1f,
                    ScaleAnimation.RELATIVE_TO_SELF, 0f,
                    ScaleAnimation.RELATIVE_TO_SELF, 0f);
            scale.setDuration(1000);
            scale.setFillAfter(true);
            // Wait given period of time or exit on touch

            sig.startAnimation(scale);//sig is an image view

            SystemClock.sleep(2000);

    }

我怎样才能纠正这个奇怪的错误?

最佳答案

我试过你的代码,没有问题。当您更改任何视图时,必须在ui/主线程上执行。您可以尝试我编辑的代码:

TranslateAnimation moveLefttoRight = new TranslateAnimation(500, 0, 0,
        0);
moveLefttoRight.setDuration(5000);
moveLefttoRight.setFillAfter(true);
bt1.startAnimation(moveLefttoRight);// im is an image view

moveLefttoRight.setAnimationListener(new AnimationListener() {

    @Override
    public void onAnimationStart(Animation animation) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onAnimationRepeat(Animation animation) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onAnimationEnd(Animation animation) {
        doAnim2(); // do the next animation
    }
});

关于android - 只有创建 View 层次结构的原始线程才能触摸其 View ,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/13061174/

10-10 00:31