Android中画bitmap的简单示例

程序效果：读入bitmap的数据流，解码，再画出来：

 

 

代码如下：

package com.ray.draw;

import java.io.InputStream;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.View;

public class TestDrawBitmap extends Activity {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new myView(this));
    }
}
class myView extends View{

	public myView(Context context) {
		super(context);
	}
	protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		//read the icon.png into buffer
		InputStream is = getResources().openRawResource(R.drawable.icon);
		//decode
		Bitmap mBitmap = BitmapFactory.decodeStream(is);
		Paint mPaint = new Paint();
		canvas.drawBitmap(mBitmap, 40, 40, mPaint);
	}
	
}

 

 

评论

3 楼 hurry07 2010-04-28  

各种画图方法有什么不同呢?

2 楼 kevin2562 2010-03-09  

简单易懂～～感谢楼主

1 楼 happyljt 2010-01-25  

已阅