Question

我有Button，其功能是为我的ImageView之一制作一秒钟delete specific table, recreate and insert the default value。一切都工作正常，但我的要求之一是显示动画aleast 1秒甚至重新创建表已完成。我怎么能做到这一点？

注意：我使用旋转效果为ImageView设置动画，这样看起来就像刷新一样。

refreshDatabase功能

public void refreshDatabase(View v){
        Button btnRefresh = (Button)findViewById(R.id.btnRef);
        ImageView refreshing = (ImageView) findViewById(R.id.rfs);
        btnRefresh.setClickable(false);
        btnRefresh.setEnabled(false);
        Animation animation = AnimationUtils.loadAnimation(this, R.anim.rotate);

        //I want to start animation here 
        refreshing.startAnimation(animation);

         ....recreat table here

        //Stop animation after 1 second 
        refreshing.clearAnimation();
    }

rotate.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >
    <rotate
        android:duration="300"
        android:interpolator="@android:anim/linear_interpolator"
        android:pivotX="50%"
        android:pivotY="50%"
        android:repeatCount="infinite"
        android:repeatMode="restart"
        android:toDegrees="360" />

</set>

我尝试添加此内容，

new Handler().postDelayed(new Runnable() {
           @Override
            public void run() {
                //recreate table here
                refreshing.clearAnimation();
           }
       }, 1000);

但我收到了错误Handler is abstract; cannot be instantiated。

任何人都可以帮助我吗？谢谢!!!

Answer 1

您可以使用等待一秒钟的Handler，然后执行clearAnimation方法：

 public void refreshDatabase(View v){
    Button btnRefresh = (Button)findViewById(R.id.btnRef);
    ImageView refreshing = (ImageView) findViewById(R.id.rfs);
    btnRefresh.setClickable(false);
    btnRefresh.setEnabled(false);
    Animation animation = AnimationUtils.loadAnimation(this, R.anim.rotate);

    //I want to start animation here
    refreshing.startAnimation(animation);

    ....recreat table here

    //Stop animation after 1 second
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            refreshing.clearAnimation();
        }
    }, 1000);

}

Answer 2

使用Handler（http://developer.android.com/reference/android/os/Handler.html）发送消息延迟或Runnable clearAnimation()

Answer 3

您可以像在rotate.xml文件中的以下示例一样设置动画的持续时间

grep SearchTerm

或者您也可以使用setDuration()以编程方式执行此操作。

Answer 4

 ImageView iv_follow_insta = findViewById(R.id.iv_follow_insta);

    Animation zoomInanimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.dialog_zoomin);
    Animation zoomOutanimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.dialog_zoomout);

    zoomOutanimation.setAnimationListener(new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationRepeat(Animation arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationEnd(Animation arg0) {
            iv_follow_insta.startAnimation(zoomInanimation);
        }
    });

    zoomInanimation.setAnimationListener(new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationRepeat(Animation arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationEnd(Animation arg0) {
            iv_follow_insta.startAnimation(zoomOutanimation);
        }
    });

    iv_follow_insta.startAnimation(zoomInanimation);
    iv_follow_insta.startAnimation(zoomOutanimation);

    new Handler().postDelayed(() -> {
        zoomInanimation.setAnimationListener(null);
        zoomOutanimation.setAnimationListener(null);
        iv_follow_insta.clearAnimation();
    }, 10000);

尝试

Android - 显示动画至少几秒钟

4 个答案: