public class MainActivity extends AppCompatActivity {
private ImageView iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//这个控件用来执行动画
iv = (ImageView) findViewById(R.id.iv);
iv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(), "你点不到我", Toast.LENGTH_SHORT).show();
}
});
}
// 点击按钮 实现透明效果
public void click1(View v) {
// 创建透明动画 1.0意味着完全不透明 0.0意味着完全透明
Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.alpha);
// 开始执行动画
iv.startAnimation(animation);
}
// 点击按钮 实现旋转效果
public void click2(View v) {
Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.rotate);
// 开始执行动画
iv.startAnimation(animation);
}
// 点击按钮 实现缩放效果
public void click3(View v) {
Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scale);
// 开始执行动画
iv.startAnimation(animation);
}
// 点击按钮 实现平移效果
public void click4(View v) {
Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.translate);
// 开始执行动画
iv.startAnimation(animation);
}
// 点击按钮 让动画一起执行
public void click5(View v) {
// 创建动画的合集
Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.set);
// 执行动画
iv.startAnimation(animation);
}
}
<?xml version="1.0" encoding="utf-8"?>
<alpha
android:fromAlpha="1.0"
android:toAlpha="0.0"
android:duration="2000"
android:repeatCount="1"
android:repeatMode="reverse"
xmlns:android="http://schemas.android.com/apk/res/android" />
<?xml version="1.0" encoding="utf-8"?>
<rotate
android:pivotX="50%"
android:pivotY="50%"
android:fromDegrees="0"
android:toDegrees="360"
android:repeatMode="reverse"
android:repeatCount="1"
android:duration="2000"
xmlns:android="http://schemas.android.com/apk/res/android"/>
<?xml version="1.0" encoding="utf-8"?>
<scale
android:fromXScale="1.0"
android:toXScale="2.0"
android:fromYScale="1.0"
android:toYScale="2.0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="1"
android:repeatMode="reverse"
android:duration="2000"
xmlns:android="http://schemas.android.com/apk/res/android" />
<?xml version="1.0" encoding="utf-8"?>
<translate
android:fromXDelta="0%p"
android:toXDelta="0%p"
android:fromYDelta="0%p"
android:toYDelta="20%p"
android:fillAfter="true"
android:duration="2000"
xmlns:android="http://schemas.android.com/apk/res/android" />
<?xml version="1.0" encoding="utf-8"?>
<set>
<alpha
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:fromAlpha="1.0"
android:repeatCount="1"
android:repeatMode="reverse"
android:toAlpha="0.0" >
</alpha>
<rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="1"
android:repeatMode="reverse"
android:toDegrees="360" >
</rotate>
<translate
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:fillAfter="true"
android:fromXDelta="0%p"
android:fromYDelta="0%p"
android:toXDelta="0%p"
android:toYDelta="20%p" >
</translate>
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:fromXScale="1.0"
android:fromYScale="1.0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="1"
android:repeatMode="reverse"
android:toXScale="2.0"
android:toYScale="2.0" >
</scale>
</set>在res目录下新建anim文件夹，在文件夹内新建alpha.xml等等。。
