Android RotateImageView 可旋转ImageView 

  1 package com.droidhen.game.layout;
  2 
  3 import android.content.Context;
  4 import android.graphics.Bitmap;
  5 import android.graphics.Bitmap.Config;
  6 import android.graphics.Canvas;
  7 import android.graphics.Paint;
  8 import android.graphics.PaintFlagsDrawFilter;
  9 import android.graphics.Rect;
 10 import android.widget.ImageView;
 11 
 12 
 13 public class RotateImageView extends ImageView {
 14     
 15     /**旋转角度**/
 16     private float _degree;
 17     /**旋转中心**/
 18     private float _x;
 19     private float _y;
 20     /** 背景和前景资源 */
 21     private Bitmap _bgRes, _fgRes;
 22     /** 数字图片资源 */
 23     private Bitmap _nums;
 24     
 25     private Bitmap _buffer;
 26     private Canvas _canvas;
 27     private int start = 0;
 28     private int unitx = 29;
 29     
 30     public RotateImageView(Context context) {
 31         super(context);
 32         _degree = 0f;
 33         _x = 0;
 34         _y = 0;
 35         _nums = BitmapFactory.decodeResource(getResources(), R.drawable.level_num);
 36     }
 37     
 38     public void setResIds(int bgResId, int fgResId) {
 39         _bgRes = BitmapFactory.decodeResource(getResources(), bgResId);
 40         _fgRes = BitmapFactory.decodeResource(getResources(), fgResId);
 41     }
 42     
 43     public void setLevel(int level) {
 44         String _level = String.valueOf(level);
 45         _buffer = Bitmap.createBitmap( _level.length()*(_nums.getWidth()/10), _nums.getHeight(), Config.ARGB_4444);
 46         unitx = _nums.getWidth()/10;
 47         _canvas = new Canvas(_buffer);
 48         for(int i = 0; i <= _level.length()-1; i++){
 49             Rect src = new Rect((_level.charAt(i) - '0')*unitx, 0, (_level.charAt(i) - '0' + 1)*unitx, _nums.getHeight());
 50             Rect dst = new Rect( i*unitx, 0, (i + 1)*unitx, _nums.getHeight());
 51             _canvas.drawBitmap(_nums, src, dst, null);
 52         }
 53     }
 54     
 55     public void setLevel(int level, int Resid) {
 56         _nums = BitmapFactory.decodeResource(getResources(), Resid);
 57         String _level = String.valueOf(level);
 58         _buffer = Bitmap.createBitmap( _level.length()*(_nums.getWidth()/10), _nums.getHeight(), Config.ARGB_4444);
 59         unitx = _nums.getWidth()/10;
 60         _canvas = new Canvas(_buffer);
 61         for(int i = 0; i <= _level.length()-1; i++){
 62             Rect src = new Rect((_level.charAt(i) - '0')*unitx, 0, (_level.charAt(i) - '0' + 1)*unitx, _nums.getHeight());
 63             Rect dst = new Rect( i*unitx, 0, (i + 1)*unitx, _nums.getHeight());
 64             _canvas.drawBitmap(_nums, src, dst, null);
 65         }
 66     }
 67     
 68     public void setDegree(float degree) {
 69         _degree = degree;
 70     }
 71     
 72     public void setDegree(float degree, float x, float y) {
 73         _degree = degree;
 74         _x = x;
 75         _y = y;
 76     }
 77     
 78     public float getDegree() {
 79         return _degree;
 80     }
 81     
 82     public float getRotateX() {
 83         return _x;
 84     }
 85     
 86     public float getRotateY() {
 87         return _y;
 88     }
 89 
 90     @Override
 91     public void draw(Canvas canvas) {
 92         canvas.save();
 93         canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG));  
 94         canvas.rotate(_degree, _x, _y);
 95         canvas.drawBitmap(_bgRes, 0, 0, null);
 96         canvas.drawBitmap(_fgRes, 25, 58, null);
 97         canvas.drawBitmap(_buffer, (_bgRes.getWidth() - _buffer.getWidth())/2f, 25, null);
 98         canvas.restore();
 99     }
100 
101 }

　　

posted on 2011-08-09 18:02  DerDeath  阅读(10444)  评论(0)  编辑  收藏  举报

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