屬性動畫(旋轉,平移,縮放,透明集合)
阿新 • • 發佈:2019-02-16
MainActivity
package com.example.animator;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private Button tran;
private ImageView img;
@Override
protected void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tran =(Button)findViewById(R.id.translate);
img =(ImageView)findViewById(R.id.img);
img.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(MainActivity.this ,"hello",Toast.LENGTH_SHORT).show();
}
});
tran.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//平移屬性動畫
ObjectAnimator translationX = ObjectAnimator.ofFloat(img, "translationX", 0, 300);
//建立透明度動畫
ObjectAnimator alpha = ObjectAnimator.ofFloat(img, "alpha", 1.0f, 0f);
//縮放
ObjectAnimator scaleY = ObjectAnimator.ofFloat(img, "scaleY", 1f, 3f);
//旋轉
ObjectAnimator rotation = ObjectAnimator.ofFloat(img, "rotation", 0f, 300f);
//動畫集合
AnimatorSet set = new AnimatorSet();
//新增動畫
set.play(rotation).with(alpha).after(translationX);
//設定動畫時間
set.setDuration(3000);
set.start();
//動畫監聽
set.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
img.setVisibility(View.GONE);
}
@Override
public void onAnimationRepeat(Animator animation) {
super.onAnimationRepeat(animation);
}
@Override
public void onAnimationStart(Animator animation) {
super.onAnimationStart(animation);
}
});
}
});
}
}
activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.animator.MainActivity">
<Button
android:id="@+id/translate"
android:text="動畫集合"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView
android:id="@+id/img"
android:src="@mipmap/v2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>