安卓学习笔记-Animations的使用

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_30241709/article/details/79771309

Animations使用步骤：

1. 创建一个AnimationSet对象
2. 根据需要创建相应的Animation对象
3. 为Animation设置相应的数据
4. 将Animation动画放入AnimationSet中
5. 使用控件对动画执行AnimationSet

package com.example.birdguan.exercise;

import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

import java.util.List;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private Button b_alpha, b_scale, b_rotate, b_translate;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        b_alpha = findViewById(R.id.btn_alpha);
        b_scale = findViewById(R.id.btn_scale);
        b_rotate = findViewById(R.id.btn_rotate);
        b_translate = findViewById(R.id.btn_translate);

        b_alpha.setOnClickListener(this);
        b_rotate.setOnClickListener(this);
        b_scale.setOnClickListener(this);
        b_translate.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.btn_alpha:
                AnimationSet animationSet_alpha = new AnimationSet(true);
                AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);
                alphaAnimation.setDuration(2000);
                animationSet_alpha.addAnimation(alphaAnimation);
                b_alpha.setAnimation(animationSet_alpha);
                Log.d("debug", "alpha");
                break;
            case R.id.btn_scale:
                AnimationSet animationSet_scale = new AnimationSet(true);
                ScaleAnimation scaleAnimation = new ScaleAnimation(0,4,0,4);
                scaleAnimation.setDuration(2000);
                animationSet_scale.addAnimation(scaleAnimation);
                b_scale.setAnimation(animationSet_scale);
                Log.d("debug", "scale");
                break;
            case R.id.btn_rotate:
                AnimationSet animationSet_rotate = new AnimationSet(true);
                RotateAnimation rotateAnimation = new RotateAnimation(0.0f,90.0f);
                rotateAnimation.setDuration(2000);
                animationSet_rotate.addAnimation(rotateAnimation);
                b_rotate.setAnimation(animationSet_rotate);
                Log.d("debug", "rotate");
                break;
            case R.id.btn_translate:
                AnimationSet animationSet_translate = new AnimationSet(true);
                TranslateAnimation translateAnimation = new TranslateAnimation(0,1.0f,0.0f,1.0f);
                translateAnimation.setDuration(2000);
                animationSet_translate.addAnimation(translateAnimation);
                b_translate.setAnimation(animationSet_translate);
                Log.d("debug", "translate");
                break;
            default:
                break;
        }
    }
}