android viewflipper 使用动画

Question

这是我在动画视图中顺序翻转字符串的编码。

import android.app.Activity;
import android.os.Bundle;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ViewFlipper;

public class mukesh extends Activity {
static String[] items={"lorem", "ipsum", "dolor", "sit", "amet",
"consectetuer", "adipiscing", "elit",
"morbi", "vel", "ligula", "vitae",
"arcu", "aliquet", "mollis", "etiam",
"vel", "erat", "placerat", "ante",
"porttitor", "sodales", "pellentesque",
"augue", "purus"};
ViewFlipper flipper;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
flipper=(ViewFlipper)findViewById(R.id.details);
flipper.setInAnimation(AnimationUtils.loadAnimation(this,
R.anim.push_left_in));
flipper.setOutAnimation(AnimationUtils.loadAnimation(this,
R.anim.push_left_out));
for (String item : items) {
Button btn=new Button(this);
btn.setText(item);
flipper.addView(btn,

new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.FILL_PARENT));
}
flipper.setFlipInterval(2000);
flipper.startFlipping();
}
} 

但是“R.anim.push_left_in”这一行显示错误。R.anim 无法解决。什么问题。我们怎样才能解决它

Answer 1

检查 res/anim 文件夹中是否有文件 push_left_in.xml。

如果您使用的是 Eclipse 并且可以确认那里有该文件，请尝试清理项目（菜单/项目/清理），然后再次尝试构建它。