用Timer重复动画 [英] repeating animation with Timer
本文介绍了用Timer重复动画的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有两个动画xml文件,我在java类中使用它们。我希望动画重复1000毫秒。我写这段代码,但是当我运行该程序时,动画不会重复。我在repeatAnim()函数中使用了Timer,但是我认为这在1000毫秒内不起作用。
I have two animations xml file, i use these in java class. I want my animation repeats 1000 msec. I write this code but when i run this program, animation not repeat. I use Timer in repeatAnim() function but i think this is not work in 1000msec.
relative.xml:
relative.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TextView
android:id="@+id/txt1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/txt1"
></TextView>
<ImageButton
android:id="@+id/btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/pic1"
android:layout_gravity="center"/>
</LinearLayout>
SwitchClass.java:
SwitchClass.java:
public class SwitchClass extends Activity implements AnimationListener{
Animation animation1;
Animation animation2;
boolean frontButton=true;
ImageButton btn;
Timer timer;
TimerTask mTimerTask;
Handler handler=new Handler();
boolean repeat=true;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.relative);
animation1=AnimationUtils.loadAnimation(this, R.anim.to_middle);
animation1.setAnimationListener(this);
animation2=AnimationUtils.loadAnimation(this, R.anim.from_middle);
animation2.setAnimationListener(this);
btn=(ImageButton)findViewById(R.id.btn2);
btn.setOnClickListener(onClickListener);
repeatAnimation();
repeatAnim();
}
private OnClickListener onClickListener=new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(SwitchClass.this,AnimClass.class);
startActivity(intent);
}
};
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
if(animation==animation1){
if(frontButton){
btn.setImageResource(R.drawable.pic2);
}
else{
btn.setImageResource(R.drawable.pic1);
}
btn.clearAnimation();
btn.setAnimation(animation2);
btn.startAnimation(animation2);
}
else{
frontButton=!frontButton;
btn.setEnabled(true);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
public void repeatAnim(){
timer=new Timer();
mTimerTask=new TimerTask(){
public void run(){
handler.post(new Runnable(){
public void run(){
repeatAnimation();
}
});
}
};
timer.schedule(mTimerTask, 1000);
}
public void repeatAnimation(){
btn.setEnabled(false);
btn.clearAnimation();
btn.setAnimation(animation1);
btn.startAnimation(animation1);
}
}
感谢您的建议。干杯
推荐答案
使用什么方法使用 Handler
,见下文:
What about to use use Handler
, see below:
private int mSampleDurationTime = 1000; // 1 sec
private boolean continueToRun = true;
Handler mHandler = new Handler();
mHandler.postDelayed(mRunnable, mSampleDurationTime);
其中 mRunnable
是您的任务:
private final Runnable mRunnable = new Runnable() {
//...
public void run() {
// do your stuff here, like update
// this block of code you going to reach every second
if(continueToRun == true){
mHandler.postDelayed(mRunnable, mSampleDurationTime);
}
}
...
};
第一次调用 postDelayed
并调用 new Runnable()
。之后,如果要继续,
将相同的方法调用到 run()
First time you call postDelayed
and invoke new Runnable()
. After, if you want to continue,
call the same method into run()
这篇关于用Timer重复动画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!
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