1.华为荣耀4a测试，分辨率一直是160*120？
2.求助
代码如下：

SurfaceHolder holder; Camera cam; Camera.Parameters myParameters; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_photo); initView(); } private void initView() { //双缓冲view SurfaceView sfv= (SurfaceView) findViewById(R.id.surfaceView); ViewGroup.LayoutParams lp = sfv.getLayoutParams(); lp.width = 750; lp.height =1200; sfv.setLayoutParams(lp); //帮助类对象 holder = sfv.getHolder(); //指定类型 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //指定回调接口 holder.addCallback(new A()); } private class A implements SurfaceHolder.Callback { @Override public void surfaceCreated(SurfaceHolder holder) { cam = Camera.open(0); try { myParameters = cam.getParameters(); myParameters.setPreviewFpsRange(20, 40); myParameters.setPictureFormat(ImageFormat.JPEG); myParameters.set("jpeg-quality", 85); // myParameters.setPictureSize(750, 1280); cam.setPreviewDisplay(holder); cam.setDisplayOrientation(90); // cam.setParameters(myParameters); cam.startPreview(); } catch (Exception e) { e.printStackTrace(); } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } @Override public void surfaceDestroyed(SurfaceHolder holder) { } } public void take(View v){ //创建图片 cam.takePicture(null,null,new B()); } private class B implements Camera.PictureCallback { @Override public void onPictureTaken(byte[] data, Camera camera) { try { Bitmap a= BitmapFactory.decodeByteArray(data,0,data.length); //当前时间的毫秒数 long time = System.currentTimeMillis(); String path="/sdcard/"+time+".jpg"; FileOutputStream out=new FileOutputStream(new File(path)); //压缩 a.compress(Bitmap.CompressFormat.JPEG,100,out); } catch (Exception e) { e.printStackTrace(); } } } }