Surface的拍照实现也是很简单，一个小demo就可以把流程看懂了。

话不多说，直接上代码

布局文件

<SurfaceView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/sv_main_surface" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:onClick="tackPhoto" android:text="拍照" />

Activity

public class MainActivity extends AppCompatActivity { private SurfaceView sv_main_surface; private Camera camera; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); sv_main_surface = (SurfaceView) findViewById(R.id.sv_main_surface); //添加surface回调函数 sv_main_surface.getHolder().addCallback(new SurfaceHolder.Callback() { @Override//控件创建时，打开照相机 public void surfaceCreated(SurfaceHolder holder) { //打开照相机 camera = Camera.open(); //设置参数 Camera.Parameters parameters=camera.getParameters(); parameters.setPictureFormat(PixelFormat.JPEG); parameters.set("jpeg-quality",85); camera.setParameters(parameters); //将画面展示到SurfaceView try { camera.setPreviewDisplay(sv_main_surface.getHolder()); } catch (IOException e) { e.printStackTrace(); } //开启预览效果 camera.startPreview(); } @Override//控件改变 public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } @Override//控件销毁 public void surfaceDestroyed(SurfaceHolder holder) { //照相同一时刻只能允许一个软件打开 if(camera!=null){ camera.stopPreview(); camera.release();//释放内存 camera=null; } } }); } public void takePhoto(View view){ camera.takePicture(null, null, new Camera.PictureCallback() { @Override public void onPictureTaken(byte[] bytes, Camera camera) { //技术：图片压缩技术（如果图片不压缩，图片大小会过大，会报一个oom内存溢出的错误） Bitmap bitmap= BitmapFactory.decodeByteArray(bytes,0,bytes.length); try { FileOutputStream fos = new FileOutputStream("/mnt/sdcard/qq"+System.currentTimeMillis()+".png");//图片保存路径 bitmap.compress(Bitmap.CompressFormat.PNG,85,fos);//压缩格式，质量，压缩路径 camera.stopPreview(); camera.startPreview(); } catch (FileNotFoundException e) { e.printStackTrace(); } } }); }}

我们还要添加权限

<!--打开照相机的权限--> <uses-permission android:name="android.permission.CAMERA"></uses-permission> <!--创建文件的权限--> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission> <!--写内存卡的权限--> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

就这样一个小案例就完成了

既然可以拍照，那肯定也是可以录像的，所以我们再来看看录像是怎么实现的

布局文件

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_media_recorder" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.zking.familyapp.MediaRecorderActivity"> <SurfaceView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/sv_media_surface" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" ></LinearLayout> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="开始" android:onClick="start" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="停止" android:onClick="stop" /></RelativeLayout>

Activity

public class MediaRecorderActivity extends AppCompatActivity { private SurfaceView sv_media_surface; private MediaRecorder mediaRecorder; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_media_recorder); sv_media_surface = (SurfaceView) findViewById(R.id.sv_media_surface); //实例化媒体录制器 mediaRecorder = new MediaRecorder(); } public void start(View view){ mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); //设置格式 mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263); mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); //设置保存路径 mediaRecorder.setOutputFile("/mnt/sdcard/uu"+System.currentTimeMillis()+".mp4"); mediaRecorder.setPreviewDisplay(sv_media_surface.getHolder().getSurface()); try { mediaRecorder.prepare(); mediaRecorder.start(); } catch (IOException e) { e.printStackTrace(); } } public void stop(View view){ if(mediaRecorder!=null){ mediaRecorder.stop(); mediaRecorder.release(); mediaRecorder=null; } }}

添加权限

<!-- 录像的权限--> <uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。