本文将带你了解Android应用开发android 7自定义相机预览及拍照功能，希望本文对大家学Android有所帮助。

本文实例为大家分享了Android实现摄像头切换，拍照及保存到相册，预览等功能，解决android7拍照之后不能连续预览的问题、参数设置相关问题以及前后摄像头语言颠倒等问题。

import android.Manifest;

import android.app.Activity;

import android.content.Context;

import   android.content.Intent;

import   android.content.pm.PackageManager;

import   android.graphics.Bitmap;

import   android.graphics.BitmapFactory;

import   android.graphics.Matrix;

import   android.graphics.PixelFormat;

import   android.hardware.Camera;

import   android.net.Uri;

import   android.os.Build;

import   android.os.Bundle;

import   android.os.Environment;

import   android.os.Handler;

import   android.support.v4.app.ActivityCompat;

import   android.util.Log;

import android.view.KeyEvent;

import   android.view.SurfaceHolder;

import   android.view.SurfaceView;

import   android.view.View;

import   android.view.WindowManager;

import   android.widget.TextView;

import com.hama.tracker.R;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

public class CamaraActivity extends Activity implements View.OnClickListener {

@Bind(R.id.return_back)

TextView   returnBack;

@Bind(R.id.tvswitch_camera)

TextView tvswitchCamera;

//启动摄像机

private Camera mCamera;

public boolean isopen_camara = false;

private SurfaceView surfaceView;

private   SurfaceHolder mholder =   null;

private SurfaceCallback previewCallBack;

private boolean isTakingPhoto;//是否正在拍照

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

verifyPermission(new String[]{Manifest.permission.CAMERA});

//   getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,   WindowManager.LayoutParams.FLAG_FULLSCREEN);

setContentView(R.layout.activity_camara);

ButterKnife.bind(this);

// 预览控件

surfaceView = (SurfaceView) this

.findViewById(R.id.surfaceView);

// 设置参数

surfaceView.getHolder().setKeepScreenOn(true);

surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

returnBack.setOnClickListener(this);

tvswitchCamera.setOnClickListener(this);

EventBus.getDefault().register(this);

}