Android摄像头视频帧数据测试代码

import android.app.Activity;import android.hardware.Camera;import android.hardware.Camera.Parameters;import android.hardware.Camera.PreviewCallback;import android.os.Bundle;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.widget.TextView;public class MainActivity extends Activity implements SurfaceHolder.Callback,PreviewCallback{private Camera camera;private TextView tv;private SurfaceView sv ;private boolean flag = false;private int cnt = 0;public void onSwitch(View v){if(flag){flag = false;LayoutParams params = sv.getLayoutParams();params.width = 600;params.height = 600;sv.setLayoutParams(params);}else{flag = true;LayoutParams params = sv.getLayoutParams();params.width = 1;params.height = 1;sv.setLayoutParams(params);}}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv = (TextView)findViewById(R.id.tv_id);sv = (SurfaceView) findViewById(R.id.surface_view);        sv.getHolder().addCallback(this);}@Overridepublic void surfaceCreated(SurfaceHolder holder) {}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {try{camera = Camera.open();camera.setPreviewDisplay(holder);Parameters params = camera.getParameters();params.setPreviewSize(352, 288);camera.setDisplayOrientation(90);camera.setParameters(params);camera.startPreview() ;camera.setPreviewCallback(this);}catch(Exception e){e.printStackTrace();}}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {if(camera != null){camera.setPreviewCallback(null);camera.stopPreview();camera.release();camera = null;}}@Overridepublic void onPreviewFrame(byte[] data, Camera camera) {tv.setText("屏幕上没有预览视频，也有视频数据回调 \n\r Frame data come cnt="+ cnt++);}}

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<?xml version="1.0" encoding="utf-8"?>

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