android开发滑动srcollerview右下角按钮根据手势显示和隐藏动画简单动画效果

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最近由于项目需要需要做个简单的动画效果

关于在srcollerview滑动时右下角按钮会跟随手势进行右侧缩进隐藏，在停止滑动时在滑动至原位置显示的简单动画效果，

下面是完整代码

MainActivity.java文件

package cn.com.dh;import android.animation.Animator;import android.animation.ObjectAnimator;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.widget.ImageView;import android.widget.ScrollView;import android.widget.Toast;public class MainActivity extends AppCompatActivity {    private ImageView imageView;    private ScrollView scrollView;    private static final String TAG = "MainActivity";    private boolean isSroll = true;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        imageView = (ImageView) findViewById(R.id.img);        scrollView = (ScrollView) findViewById(R.id.sroll);        scrollView.setOnTouchListener(new View.OnTouchListener() {            @Override            public boolean onTouch(View v, MotionEvent event) {                switch (event.getAction()) {                    case MotionEvent.ACTION_UP:                        Toast.makeText(MainActivity.this, "停止", Toast.LENGTH_SHORT).show();                        Log.e(TAG, "onTouch: " + "停止滑动");                        ObjectAnimator objectAnimator1 = ObjectAnimator.ofFloat(imageView, "translationX", 300f, 0f).setDuration(1000);                        objectAnimator1.start();                        isSroll = true;                        break;                    case MotionEvent.ACTION_MOVE:                        if (isSroll) {                            Toast.makeText(MainActivity.this, "滑动", Toast.LENGTH_SHORT).show();                            Log.e(TAG, "onTouch: " + "正在滑动");                            ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 0f, 300f).setDuration(1000);                            objectAnimator.start();                            isSroll = false;                            break;                        }                        break;                }                return false;            }        });    }    public void btn_click_1(View view) {        Toast.makeText(MainActivity.this, "消失", Toast.LENGTH_SHORT).show();        ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 0f, 300f).setDuration(1000);        objectAnimator.start();        //imageView.setVisibility(View.GONE);        objectAnimator.addListener(new Animator.AnimatorListener() {            @Override            public void onAnimationStart(Animator animation) {            }            @Override            public void onAnimationEnd(Animator animation) {                imageView.setVisibility(View.GONE);            }            @Override            public void onAnimationCancel(Animator animation) {            }            @Override            public void onAnimationRepeat(Animator animation) {                imageView.setVisibility(View.GONE);            }        });    }    public void btn_click_2(View view) {        imageView.setVisibility(View.VISIBLE);        Toast.makeText(MainActivity.this, "显示", Toast.LENGTH_SHORT).show();        ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 300f, 0f).setDuration(1000);        objectAnimator.start();    }}

xml文件就是一个简单的srcollerview。

菜鸟一枚，不喜勿愤。

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