SurfaceView sample code

  次阅读 作者:智能小宝 来源:互联网 2015-10-13 07:39 我要评论(0)

sample code

package jp.deathmarch.yukkuri; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.RectShape; import android.util.Log; import android.view.KeyEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; /** * Game盤. * * @author shuji */ public class GameBoadView extends SurfaceView { private Component youmu; public GameBoadView(Context context) { super(context); getHolder().addCallback(new SurfaceCallback()); setFocusable(true); requestFocus(); } public void setup() { youmu = new Component(getClass().getResourceAsStream("youmu.png")); } void repaint() { Log.d("Yukkuri", "repaint"); Canvas canvas = null; SurfaceHolder surfaceHolder = getHolder(); try { canvas = surfaceHolder.lockCanvas(); if (canvas == null) return; synchronized (surfaceHolder) { draw(canvas); } } finally { if (canvas != null) surfaceHolder.unlockCanvasAndPost(canvas); } } @Override public void draw(Canvas canvas) { Log.d("Yukkuri", "draw"); ShapeDrawable rect = new ShapeDrawable(new RectShape()); Paint paint = rect.getPaint(); paint.setColor(0xFF000000); rect.setBounds(0, 0, getWidth(), getHeight()); rect.draw(canvas); youmu.drawable.draw(canvas); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { Log.d("Yukkuri", "onKeyDown" + event); switch (keyCode) { case KeyEvent.KEYCODE_DPAD_UP: youmu.up(); break; case KeyEvent.KEYCODE_DPAD_RIGHT: youmu.right(); break; case KeyEvent.KEYCODE_DPAD_DOWN: youmu.down(); break; case KeyEvent.KEYCODE_DPAD_LEFT: youmu.left(); break; case KeyEvent.KEYCODE_DPAD_CENTER: youmu.scaleUp(); break; default: break; } repaint(); return true; } /** * SurfaceView Callback class. * <p> * SurffaceViewの生成、破棄時などにコールバックされる. * </p> * * @author shuji * */ private class SurfaceCallback implements SurfaceHolder.Callback { public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } public void surfaceCreated(SurfaceHolder holder) { Log.d("Yukkuri", "surfaceCreated"); repaint(); } public void surfaceDestroyed(SurfaceHolder arg0) { Log.d("Yukkuri", "surfaceDestroyed"); } } }

package jp.deathmarch.yukkuri; import java.io.InputStream; import android.graphics.Rect; import android.graphics.drawable.BitmapDrawable; public class Component { BitmapDrawable drawable; int a = 5; int width; int height; Rect bounds; public Component(InputStream input) { this.drawable = new BitmapDrawable(input); width = drawable.getIntrinsicWidth(); height = drawable.getIntrinsicHeight(); bounds = new Rect(0, 0, width, height); } public void left() { this.bounds.left -= a; this.bounds.right -= a; this.drawable.setBounds(bounds); } public void right() { this.bounds.left += a; this.bounds.right += a; this.drawable.setBounds(bounds); } public void down() { this.bounds.top += a; this.bounds.bottom += a; this.drawable.setBounds(bounds); } public void up() { this.bounds.top -= a; this.bounds.bottom -= a; this.drawable.setBounds(bounds); } public void scaleUp() { width = (int) (width * 1.2); this.bounds.right = this.bounds.left + width; height = (int) (height * 1.2); this.bounds.bottom = this.bounds.top + height; this.drawable.setBounds(bounds); } public void setPosition(int x, int y) { bounds.left = x; bounds.right = x + width; bounds.top = y; bounds.bottom = y + height; } }

package jp.deathmarch.yukkuri; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.FrameLayout; public class Yukkuri extends Activity { private GameBoadView gameBoad; @Override protected void onCreate(Bundle savedInstanceState) { Log.d("Yukkuri", "onCreate"); super.onCreate(savedInstanceState); this.gameBoad = new GameBoadView(this); FrameLayout layout = new FrameLayout(this); layout.addView(gameBoad); setContentView(layout); this.gameBoad.setup(); } }

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