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  • 14_自定义View重绘


    import android.os.Bundle;
    import android.app.Activity;
    import android.content.Context;
    import android.graphics.Canvas;
    import android.view.Menu;
    import android.view.View;
    import android.view.Window;
    import android.view.WindowManager;

    public class MainActivity extends Activity {

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            requestWindowFeature(Window.FEATURE_NO_TITLE);
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                    WindowManager.LayoutParams.FLAG_FULLSCREEN);
            setContentView(new RenderView(this));
        }
    }

    class RenderView extends View {
        Random rand = new Random();

        public RenderView(Context context) {
            super(context);
        }

        protected void onDraw(Canvas canvas) {
            canvas.drawRGB(rand.nextInt(256), rand.nextInt(256),
                    rand.nextInt(256));
            invalidate();
        }
    }

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  • 原文地址:https://www.cnblogs.com/xl711436/p/3060780.html
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