Android实现可旋转的ImageView
直接将RefreshProgress添加进xml中当做ImageView就能使用 package com.example.administrator.superrefresh; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Matrix; import android.graphics.drawable.BitmapDrawable; import android.util.AttributeSet; import android.view.animation.Animation; import android.view.animation.LinearInterpolator; import android.view.animation.RotateAnimation; import android.widget.ImageView; /** * Created by SLY on 2015/9/6. */ public class RefreshProgress extends ImageView { private Matrix m = new Matrix(); //匀速加速器 private LinearInterpolator lir = new LinearInterpolator(); public RefreshProgress(Context context) { super(context); } public RefreshProgress(Context context, AttributeSet attrs) { super(context, attrs); } public void changeAnimation(int num){ m.reset(); // Bitmap bitmap = ((BitmapDrawable) getResources().getDrawable(R.drawable.loading_rotate)) .getBitmap(); this.setImageBitmap(bitmap); //显示图像 // m.setRotate(num); Bitmap newBitmap = Bitmap.createBitmap(bitmap,0,0,bitmap.getWidth(),bitmap.getHeight(),m,true); BitmapDrawable bd = new BitmapDrawable(newBitmap); this.setImageDrawable(bd); //显示新的图像 } //控制动画 public void Animation(){ RotateAnimation rotate = new RotateAnimation(0, 720, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); //默认为0,为-1时一直循环动画 rotate.setRepeatCount(-1); //添加匀速加速器 rotate.setInterpolator(lir); rotate.setDuration(2000); rotate.setFillAfter(true); this.startAnimation(rotate); } }
文章题目:Android实现可旋转的ImageView
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