Java 逐帧动画未运行
嗯,我是android的新手,我不知道我的代码出了什么问题 这是我的xml文件Java 逐帧动画未运行,java,android,Java,Android,嗯,我是android的新手,我不知道我的代码出了什么问题 这是我的xml文件 <?xml version="1.0" encoding="utf-8"?> <animation-list xmlns:android="http://schemas.android.com/apk/res/android" id="selected" android:oneshot="false"> <item android:drawable="@drawable/
<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" id="selected" android:oneshot="false">
<item android:drawable="@drawable/w1" android:duration="50" />
<item android:drawable="@drawable/w2" android:duration="50" />
</animation-list>
// Start the animation (looped playback by default).
frameAnimation.start();
在声明ImageView后设置图像可见性
img.setVisibility(ImageView.VISIBLE);
在按下按钮时,检查frameAnimation是否正在运行
如果是,则调用stop()
方法
frameAnimation.stop();
并调用您的方法来启动动画
frameAnimation.start();
使用runnable启动动画:-
new Runnable {
public void run() {
frameAnimation.start();
}
}
或
请参阅以下现有问题:-
我用按钮点击事件测试代码,它工作得很好 维护性:
public class FrameAnimationActivity extends Activity {
AnimationDrawable frameAnimation;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ImageView img = (ImageView) findViewById(R.id.imageView1);
img.setBackgroundResource(R.anim.frames);
frameAnimation = (AnimationDrawable) img.getBackground();
Button btn = (Button) findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
frameAnimation.start();
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:text="Button" android:id="@+id/button1"
android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<ImageView android:layout_height="wrap_content" android:id="@+id/imageView1"
android:layout_width="wrap_content"></ImageView>
</LinearLayout>
Frames.xml
<?xml version="1.0" encoding="UTF-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="@drawable/img_0" android:duration="50" />
<item android:drawable="@drawable/img_1" android:duration="50" />
<item android:drawable="@drawable/img_2" android:duration="50" />
<item android:drawable="@drawable/img_3" android:duration="50" />
<item android:drawable="@drawable/img_4" android:duration="50" />
<item android:drawable="@drawable/img_5" android:duration="50" />
<item android:drawable="@drawable/img_6" android:duration="50" />
<item android:drawable="@drawable/img_7" android:duration="50" />
<item android:drawable="@drawable/img_8" android:duration="50" />
<item android:drawable="@drawable/img_9" android:duration="50" />
</animation-list>
Main.xml:
public class FrameAnimationActivity extends Activity {
AnimationDrawable frameAnimation;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ImageView img = (ImageView) findViewById(R.id.imageView1);
img.setBackgroundResource(R.anim.frames);
frameAnimation = (AnimationDrawable) img.getBackground();
Button btn = (Button) findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
frameAnimation.start();
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:text="Button" android:id="@+id/button1"
android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<ImageView android:layout_height="wrap_content" android:id="@+id/imageView1"
android:layout_width="wrap_content"></ImageView>
</LinearLayout>
您遇到了什么错误?请尝试这样实现。在onclick listener中使用一个按钮并编写frameAnimation.start()方法,因为它需要强制启动。否则,在处理程序中启动方法。@siva我没有任何错误。@sony我已尝试实现可运行,但它仍然不工作。@sony它完全正确…但您必须从按钮或触摸按钮强制启动动画事件…是否有可能在启动应用程序时直接运行。我想创建一个可见性消失的按钮,并执行类似btn.performClick()的单击事件。这是自动执行单击事件。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:text="Button" android:id="@+id/button1"
android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<ImageView android:layout_height="wrap_content" android:id="@+id/imageView1"
android:layout_width="wrap_content"></ImageView>
</LinearLayout>