之后按钮的第二次点击，为什么不会animationDrawable运行 [英] why wont animationDrawable run after second click of button

问题描述

大家好希望你能帮助并希望感谢 -

hi everyone hope you can help and thanks for looking -

我有一个线程来运行一个硬币旋转的动画是这个

i have a thread to run a coin spinning animation which is this

    public class MainActivity extends Activity {
static AnimationDrawable frameAnimation;

public boolean currentSpin = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //is this where you want me to do it
    ImageView coinAnima = (ImageView) findViewById(R.id.imageView1);


    Button bt = (Button) findViewById(R.id.button1);
      bt.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        spinCoin1();
        }
    });

}
//end of onCreate

public void spinCoin1(){
    coinAnima = (ImageView) findViewById(R.id.imageView1);
    coinAnima.setBackgroundResource(R.anim.coin_spin_heads); 

        new Thread(new Runnable() {
                    public void run() {
                        frameAnimation = (AnimationDrawable) coinAnima.getBackground();
                        frameAnimation.start();

                        try {
                            Thread.sleep(5000);
                          } catch (InterruptedException e) {
                            e.printStackTrace();
                          }    

                          frameAnimation.stop();

                    //end of run
                    }

        //starts the thread        
         }).start();

//end of method      
}
//end of class
}

它从一个按钮的一个onclick运行，
当我点击按钮，它会导致与第二时间误差

it runs from an onclick of a button, when i click the button a second time it causes and error

这是

    03-10 23:33:28.804: E/AndroidRuntime(13689): FATAL EXCEPTION: Thread-12
03-10 23:33:28.804: E/AndroidRuntime(13689): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.view.ViewRoot.checkThread(ViewRoot.java:2936)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.view.ViewRoot.invalidateChild(ViewRoot.java:642)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:668)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.view.ViewGroup.invalidateChild(ViewGroup.java:2511)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.view.View.invalidate(View.java:5272)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.view.View.invalidateDrawable(View.java:7310)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.widget.ImageView.invalidateDrawable(ImageView.java:176)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.graphics.drawable.Drawable.invalidateSelf(Drawable.java:300)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.graphics.drawable.DrawableContainer.selectDrawable(DrawableContainer.java:227)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.graphics.drawable.AnimationDrawable.setFrame(AnimationDrawable.java:211)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.graphics.drawable.AnimationDrawable.nextFrame(AnimationDrawable.java:203)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.graphics.drawable.AnimationDrawable.run(AnimationDrawable.java:140)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at android.graphics.drawable.AnimationDrawable.start(AnimationDrawable.java:107)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at com.example.testanima.MainActivity$2.run(MainActivity.java:61)
03-10 23:33:28.804: E/AndroidRuntime(13689):    at java.lang.Thread.run(Thread.java:1019)

任何人都可以再告诉我这个错误，并感谢修复为寻找

can anyone tell me a fix for this error and thanks again for looking

推荐答案

您不能maniuplate在另一个线程GUI元素。这是在文档明确规定。

You can't maniuplate gui elements in another thread. This is clearly stated in the docs.

您可以通过更新您的run（）GUI元素：

You can update gui elements in your run() by using:

 public void run()
 ...
  runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            update gui elements
                        }
                 });
 ....

也在你的动画你的第一个动画完成后调用clear（）。然后你可以使用它不止一次。

Also call clear() on your animation after your first animation has completed. Then you can use it more than once.

这篇关于之后按钮的第二次点击，为什么不会animationDrawable运行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！