Android 简单图形绘制
Android 简单图形绘制
Android 简单绘制一个矩形:
- 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);
- }
- }
- }
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