void myDraw() { float width, height; width = getMeasuredWidth(); height = getMeasuredHeight(); canvas = holder.lockCanvas(); canvas.drawColor(Color.GREEN); canvas.drawPath(path, paint); holder.unlockCanvasAndPost(canvas); }
public void onSensorChanged(String sensorStr) { Log.v(TAG, "onSensorChanged : " + sensorStr); String[] fs = sensorStr.split(","); if (fs.length == 4) { acceValusW = Float.parseFloat(fs[0]) * (BASE - 10); // 获得x轴的值 acceValusX = Float.parseFloat(fs[1]) * (BASE - 10); // 获得y轴的值 acceValusY = Float.parseFloat(fs[2]) * (BASE - 10); // 获得z轴的值 acceValusZ = Float.parseFloat(fs[3]) * (BASE - 10); // 锁定整个SurfaceView Canvas mCanvas = mSurfaceHolder.lockCanvas(); try { if (mCanvas != null) { // 画笔的颜色(红) mPaint.setColor(Color.RED); // 画X轴的点 mCanvas.drawPoint(x, (int) (BASE + acceValusX), mPaint); // 画笔的颜色(绿) mPaint.setColor(Color.GREEN); // 画Y轴的点 mCanvas.drawPoint(x, (int) (BASE * 2 + acceValusY), mPaint); // 画笔的颜色(蓝) mPaint.setColor(Color.CYAN); // 画Z轴的点 mCanvas.drawPoint(x, (int) (BASE * 3 + acceValusZ), mPaint); // 画笔的颜色(huang) mPaint.setColor(Color.WHITE); // 画W轴的点 mCanvas.drawPoint(x, (int) (BASE * 4 + acceValusW), mPaint); // 横坐标+1 x++; // 如果已经画到了屏幕的最右边 // if (x > getWindowManager().getDefaultDisplay().getWidth()) { if (x > mCanvas.getWidth()) { x = 0; // 清屏 mCanvas.drawColor(Color.BLACK); } // 绘制完成,提交修改 mSurfaceHolder.unlockCanvasAndPost(mCanvas); } } catch (Exception e) { e.printStackTrace(); } finally { if (mCanvas != null) { // 重新锁一次 mSurfaceHolder.lockCanvas(new Rect(0, 0, 0, 0)); mSurfaceHolder.unlockCanvasAndPost(mCanvas); } } } }
public void mDraw() { mCanvas = mHolder.lockCanvas(); // 获得画布对象,开始对画布画画 mCanvas.drawColor(++i); // 设置画布颜色为黑色 canvasMethod(mCanvas); // 调用自定义的方法,主要是在传进去的画布对象上画画 mHolder.unlockCanvasAndPost(mCanvas); // 把画布显示在屏幕上 }
/** 构造函数,主要对一些对象初始化 */ public MySurfaceView(Context context) { super(context); mHolder = this.getHolder(); // 获得SurfaceHolder对象 mHolder.addCallback(this); // 添加状态监听 mPaint = new Paint(); // 创建一个画笔对象 mPaint.setColor(Color.WHITE); // 设置画笔的颜色为白色 qPaint = new Paint(); // 创建一个画笔对象 qPaint.setAntiAlias(true); // 消除锯齿 qPaint.setStyle(Paint.Style.STROKE); // 设置画笔风格为描边 qPaint.setStrokeWidth(3); // 设置描边的宽度为3 qPaint.setColor(Color.GREEN); // 设置画笔的颜色为绿色 // 创建路径对象 mPath = new Path(); qPath = new Path(); tPath = new Path(); // 设置坐标为50,100 mX = 50; mY = 100; // 设置贝塞尔曲线的开始坐标为(10,200) qStartX = 10; qStartY = 200; setFocusable(true); // 设置焦点 }
public MyView(Context context) { super(context); paint = new Paint(); paint.setColor(Color.BLUE); paint.setStyle(Paint.Style.STROKE); // 设置画笔风格为描边 paint.setStrokeWidth(10); random = new Random(); setFocusable(true); holder = getHolder(); holder.addCallback(this); path = new Path(); }
protected void displayVideoFrame(SurfaceHolder holder) { if (videoFormat != null) { try { ISurfaceWrapper surface = AndroidMediaObjectFactory.Converter.convert(holder.getSurface()); mediaFileInfo.setOutputSurface(surface); ByteBuffer buffer = ByteBuffer.allocate(1); mediaFileInfo.getFrameAtPosition(100, buffer); } catch (Exception e) { String message = (e.getMessage() != null) ? e.getMessage() : e.toString(); showMessageBox( message, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) {} }); } } }
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.gatt_services_characteristics); final Intent intent = getIntent(); mDeviceName = intent.getStringExtra(EXTRAS_DEVICE_NAME); mDeviceAddress = intent.getStringExtra(EXTRAS_DEVICE_ADDRESS); // Sets up UI references. mConnectionState = (TextView) findViewById(R.id.connection_state); // is serial present? isSerial = (TextView) findViewById(R.id.isSerial); msgEdit = (EditText) findViewById(R.id.editText); returnText = (TextView) findViewById(R.id.returnText); sendButton = (Button) findViewById(R.id.sendButton); // timeButton = (Button) findViewById(R.id.timeButton); sendButton.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { if (characteristicReady) { StringBuffer sb = new StringBuffer("m"); sb.append(msgEdit.getText()).append("\n"); sendMessage(sb.toString()); } } }); // timeButton.setOnClickListener(new View.OnClickListener() { // // @Override // public void onClick(View v) { // if (characteristicReady) { // StringBuffer sb = new StringBuffer("t"); // Date now = new Date(); // sb.append(DATE_FORMAT.format(now)).append("\n"); // // sendMessage(sb.toString()); // } // } // }); infoButton = (ImageView) findViewById(R.id.infoImage); infoButton.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { iascDialog(); } }); mSurfaceView = (SurfaceView) findViewById(R.id.surfaceView); mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.addCallback(new MyHolder()); mPaint = new Paint(); // 画笔的粗细 mPaint.setStrokeWidth(5.0f); getActionBar().setTitle(mDeviceName); getActionBar().setDisplayHomeAsUpEnabled(true); Intent gattServiceIntent = new Intent(this, BluetoothLeService.class); bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE); }