Android 连续的补间动画（Animation/Tween）

待我称王封你为后i 2022-08-21 05:41 129阅读 0赞

### 通过Animation监听事件实现连续动画 ###

--------------------

### 创建一个简单的xml文件，里面有一个< imageview>即可 ###

### MainActivity.java: ###

public class MainActivity extends Activity {
        
        ImageView iv;
        int index = 0;
        RotateAnimation rotate_animation;
        TranslateAnimation translate_animation1, translate_animation2;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            iv = (ImageView) findViewById(R.id.iv);
            iv.setOnClickListener(new TranslateButtonListener());
        }
    
        private void iv_setlocal(int value) {
            iv.setPadding(iv.getPaddingLeft() + value, iv.getPaddingTop() + value,
                    iv.getPaddingRight(), iv.getPaddingBottom());
            // 固定第一次动画结束后图片的位置
        }
    
        private class TranslateButtonListener implements OnClickListener {
        
    
            public void onClick(View v) {
                translate_animation1 = new TranslateAnimation(Animation.ABSOLUTE,
                        0, Animation.ABSOLUTE, 100, Animation.ABSOLUTE, 0,
                        Animation.ABSOLUTE, 100);
                translate_animation1.setDuration(1000);
                // translate_animation_set.setFillBefore(false);
                // 是否停在第一帧
                translate_animation1.setFillAfter(true);
                // 是否停在最后一帧
                iv.startAnimation(translate_animation1);
    
                translate_animation1.setAnimationListener(animationListener);
    
            }
    
            AnimationListener animationListener = new AnimationListener() {
    
                @Override
                public void onAnimationStart(Animation arg0) {
    
                }
    
                @Override
                public void onAnimationRepeat(Animation arg0) {
    
                }
    
                @Override
                public void onAnimationEnd(Animation animation) {
                    // 当一个动画执行结束的时候，执行该方法
                    switch (index) {
                    case 0: {
                        index++;
                        iv_setlocal(100);
                        rotate_animation = new RotateAnimation(0, 90,
                                Animation.ABSOLUTE, 120, Animation.ABSOLUTE, 120);
                        /* 第一个参数小于第二个的话为顺时针旋转，反之则为逆时针旋转 */
                        rotate_animation.setDuration(1000);
                        rotate_animation.setFillAfter(true);
                        iv.startAnimation(rotate_animation);
                        rotate_animation.setAnimationListener(animationListener);
                    }
                        break;
                    case 1:
                        index++;
                        iv.setImageResource(R.drawable.ic_left);
                        //固定旋转后图片的方向
                        translate_animation2 = new TranslateAnimation(
                                Animation.ABSOLUTE, 0, Animation.ABSOLUTE, 320,
                                Animation.ABSOLUTE, 0, Animation.ABSOLUTE, 0);
                        translate_animation2.setDuration(2000);
                        translate_animation2.setFillAfter(true);
                        iv.startAnimation(translate_animation2);
                        translate_animation2
                                .setAnimationListener(animationListener);
    
                        break;
    
                    }
                }
            };
    
        }
    
    }