绘制一个矩形
package rw.Draw;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Rect;
import android.graphics.Shader;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RectShape;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.View;
public class Drwa02Activity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Draw draw=new Draw(this);
setContentView(draw);
}
public class Draw extends View{
private ShapeDrawable shapeDrawable;//ShapeDrawable继承来自Drawable类，可以随便绘制二维图形
public Draw(Context context) {
super(context);
// TODO Auto-generated constructor stub
shapeDrawable=new ShapeDrawable(new RectShape());
shapeDrawable.getPaint().setColor(Color.RED);
shapeDrawable.setBounds(20, 20, 400, 200); //shapeDrawable.setBounds(left, top, right, bottom);
}
protected void onDraw(Canvas canvas){
shapeDrawable.draw(canvas);
}
}
}
