我需要为TextView实现'旋转'动画。以下是代码。
MainActivity.java
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.TextView;
public class MainActivity extends Activity {
private TextView words;
private Map<String, String> wordsMap;
private Animation rotate;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
words = (TextView)findViewById(R.id.word);
rotate = AnimationUtils.loadAnimation(this, R.anim.rotate);
wordsMap = new HashMap<String, String>();
wordsMap.put("Dog", "Perro");
wordsMap.put("Cat", "Gato");
wordsMap.put("Universe", "Universo");
wordsMap.put("Telephone", "Teléfono");
wordsMap.put("Key Board", "Teclado Del");
wordsMap.put("Country", "País");
//Registering Listeners
words.setOnClickListener(new TextClicked());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private OnTouchListener textViewSwiped = new OnSwipeTouchListener()
{
public boolean onSwipeLeft()
{
return true;
}
};
private class TextClicked implements OnClickListener
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
words.setAnimation(rotate);
words.setText("Rotated");
}
}
}
rotate.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<rotate android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:duration="600"
android:interpolator="@android:anim/cycle_interpolator"/>
</set>
当我点击TextView时，它不起作用。除此之外，我需要的旋转动画与我在这里所做的有点不同。这种旋转就像一个圆圈。我需要的是颠倒并显示新文本的东西。例如，您可以翻转一张游戏卡中的卡片以显示另一侧的卡片吗？我需要同样的东西。
更新
我不是在寻求90度旋转。这应该就像你可以“翻转”一张卡片（我正在谈论卡片组中的真卡片）到另一边。
答案 0 :(得分：1)
“我需要的是颠倒过来并显示新文字......”
为此，您需要使用API 11支持的ObjectAnimator，您可以从here为此下载supprort库。
并查看沿Y轴旋转TextView的示例代码...
ObjectAnimator animator = ObjectAnimator.ofFloat(textView, "rotationY", 0,90,180,270,360);
animator.setDuration(3000);
animator.setInterpolator(new LinearInterpolator());
animator.start();
答案 1 :(得分：1)
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<rotate android:fromDegrees="0"
android:toDegrees="90" // changable
android:pivotX="50%"
android:pivotY="50%"
android:duration="600"
android:interpolator="@android:anim/cycle_interpolator"/>
</set>
答案 2 :(得分：1)
将您的xml代码更改为
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<rotate
android:duration="1000"
android:fromDegrees="0"
android:toDegrees="90"
android:interpolator="@android:anim/cycle_interpolator"
android:pivotX="50%"
android:pivotY="50%" />
</set>
并在textview上单击开始动画
words.startAnimation(rotate);
words.setText("Rotated");
onCreate()
rotate.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
words.setText("Rotated");
}
});
答案 3 :(得分：0)
我找到了答案。在这里。
<?xml version="1.0" encoding="utf-8"?>
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXScale="1.0" android:toXScale="0.0"
android:pivotX="50%"
android:fromYScale="1.0" android:toYScale="1.0"
android:pivotY="50%"
android:duration="250" />
答案 4 :(得分：0)
试试这个：
public class FlipAnimation extends Animation {
private View view;
private Drawable drawable;
private boolean backSide;
private Camera camera;
public FlipAnimation(View v, Drawable d) {
this.view = v;
this.drawable = d; // this needs to be a mirrored Drawable
this.camera = new Camera();
this.camera.save();
this.backSide = false;
setDuration(3000);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
float degrees = 180 * interpolatedTime;
if (degrees > 90 && !backSide) {
backSide = true;
view.setBackgroundDrawable(drawable);
}
camera.restore();
camera.save();
camera.rotateX(degrees);
Matrix m = t.getMatrix();
camera.getMatrix(m);
float w2 = view.getWidth() / 2f;
float h2 = view.getHeight() / 2f;
m.preTranslate(-w2, -h2);
m.postTranslate(w2, h2);
}
}
答案 5 :(得分：0)
在res中创建一个动画文件夹。并添加.xml文件，将其命名为from_middle并粘贴以下代码
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXScale="0.0" android:toXScale="1.0"
android:pivotX="50%"
android:fromYScale="1.0" android:toYScale="1.0"
android:pivotY="50%"
android:duration="250" />
创建另一个xml文件并将其命名为to_middle并粘贴以下内容：
<?xml version="1.0" encoding="utf-8"?>
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXScale="1.0" android:toXScale="0.0"
android:pivotX="50%"
android:fromYScale="1.0" android:toYScale="1.0"
android:pivotY="50%"
android:duration="250" />
在您的活动中：
将此代码粘贴到“创建：
” animation1 = AnimationUtils.loadAnimation(this, R.anim.to_middle);
animation1.setAnimationListener(this);
animation2 = AnimationUtils.loadAnimation(this, R.anim.from_middle);
animation2.setAnimationListener(this);
和onAnimationEnd：
@Override
public void onAnimationEnd(Animation animation) {
if (animation==animation1) {
if (isBackOfCardShowing) { // boolean variable
mtextView1.setBackgroundResource(R.drawable.surfboard_memory);
} else {
mtextView1.setBackgroundResource(R.drawable.back_memory);// any pic
}
mtextView1.clearAnimation();
mtextView1.setAnimation(animation2);
mtextView1.startAnimation(animation2);
} else {
isBackOfCardShowing=!isBackOfCardShowing;
mtextView1.setEnabled(true);
}
}
它确实有效并经过测试.. :)