实现手电筒Flash Light 关键代码
实现Flash的逻辑
view.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(!isOpen){ view.setBackgroundResource(R.drawable.open); //改变背景图片 openFlash(); isOpen = true; }else{ view.setBackgroundResource(R.drawable.off); //改变背景图片 closeFlash(); isOpen = false; } } });
打开手电筒
private void openFlash(){ camera = Camera.open(); //打开照相机 Parameters params = camera.getParameters(); params.setFlashMode(Parameters.FLASH_MODE_TORCH); //设置照相机参数,FLASH_MODE_TORCH 持续的亮灯,FLASH_MODE_ON 只闪一下 camera.setParameters(params); camera.startPreview(); //开始亮灯 }
关掉手电筒
private void closeFlash(){ if(camera != null){ camera.stopPreview(); //关掉亮灯 camera.release(); //关掉照相机 } }
Release:
private void release(){ if(camera != null){ camera.release(); } }