大家好，这是一个简单的拍照功能，很简单的界面，一个显示图像区域SurfaceView一个“拍照”按钮。直接上代码！1、CameraDemoActivity.java（主界面）package org.winplus.camera;    import java.io.File;  import java.io.FileOutputStream;  import java.io.IOException;  import java.util.Date;    import android.app.Activity;  import android.content.pm.ActivityInfo;  import android.graphics.PixelFormat;  import android.hardware.Camera;  import android.os.AsyncTask;  import android.os.Bundle;  import android.os.Environment;  import android.text.format.DateFormat;  import android.util.Log;  import android.view.KeyEvent;  import android.view.SurfaceHolder;  import android.view.SurfaceView;  import android.view.View;  import android.view.Window;  import android.view.View.OnClickListener;  import android.widget.Button;    public class CameraDemoActivity extends Activity{        private final static String TAG = "CameraActivity";      private SurfaceView surfaceView;      private SurfaceHolder surfaceHolder;      private Camera camera;      private File picture;      private Button btnSave;            @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);          this.requestWindowFeature(Window.FEATURE_NO_TITLE);          setContentView(R.layout.main);          setupViews();      }            private void setupViews(){          surfaceView = (SurfaceView) findViewById(R.id.camera_preview); // Camera interface to instantiate components          surfaceHolder = surfaceView.getHolder(); // Camera interface to instantiate components          surfaceHolder.addCallback(surfaceCallback); // Add a callback for the SurfaceHolder          surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);                    btnSave = (Button) findViewById(R.id.save_pic);                    btnSave.setOnClickListener(new OnClickListener() {                            @Override              public void onClick(View v) {                  takePic();              }          });      }                  @Override      public boolean onKeyDown(int keyCode, KeyEvent event) {          if (keyCode == KeyEvent.KEYCODE_CAMERA                  || keyCode == KeyEvent.KEYCODE_SEARCH) {              takePic();              return true;          }          return super.onKeyDown(keyCode, event);      }        private void takePic() {            camera.stopPreview();// stop the preview            camera.takePicture(null, null, pictureCallback); // picture      }        // Photo call back      Camera.PictureCallback pictureCallback = new Camera.PictureCallback() {          //@Override          public void onPictureTaken(byte[] data, Camera camera) {              new SavePictureTask().execute(data);              camera.startPreview();          }      };        // save pic      class SavePictureTask extends AsyncTask<byte[], String, String> {          @Override          protected String doInBackground(byte[]... params) {              String fname = DateFormat.format("yyyyMMddhhmmss", new Date()).toString()+".jpg";                            Log.i(TAG, "fname="+fname+";dir="+Environment.getExternalStorageDirectory());              //picture = new File(Environment.getExternalStorageDirectory(),fname);// create file                            picture = new File(Environment.getExternalStorageDirectory()+"/"+fname);                            try {                  FileOutputStream fos = new FileOutputStream(picture.getPath()); // Get file output stream                  fos.write(params[0]); // Written to the file                  fos.close();               } catch (Exception e) {                  e.printStackTrace();              }              return null;          }      }        // SurfaceHodler Callback handle to open the camera, off camera and photo size changes      SurfaceHolder.Callback surfaceCallback = new SurfaceHolder.Callback() {            public void surfaceCreated(SurfaceHolder holder) {              Log.i(TAG, "surfaceCallback====");              camera = Camera.open(); // Turn on the camera              try {                  camera.setPreviewDisplay(holder); // Set Preview              } catch (IOException e) {                  camera.release();// release camera                  camera = null;              }          }            public void surfaceChanged(SurfaceHolder holder, int format, int width,                  int height) {              Log.i(TAG,"====surfaceChanged");              Camera.Parameters parameters = camera.getParameters(); // Camera parameters to obtain              parameters.setPictureFormat(PixelFormat.JPEG);// Setting Picture Format  //          parameters.set("rotation", 180); // Arbitrary rotation              camera.setDisplayOrientation(0);  //          parameters.setPreviewSize(400, 300); // Set Photo Size              camera.setParameters(parameters); // Setting camera parameters              camera.startPreview(); // Start Preview          }            public void surfaceDestroyed(SurfaceHolder holder) {              Log.i(TAG,"====surfaceDestroyed");              camera.stopPreview();// stop preview              camera.release(); // Release camera resources              camera = null;          }      };  }  2、main.xml（布局文件）<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="fill_parent"      android:layout_height="fill_parent"      android:orientation="vertical" >        <android.view.SurfaceView          android:id="@+id/camera_preview"          android:layout_width="800dip"          android:layout_height="600dip"          android:layout_alignParentTop="true"          android:layout_centerInParent="true"          android:layout_gravity="center_vertical|center_horizontal" />        <Button          android:id="@+id/save_pic"          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:text="@string/txt_save" />    </LinearLayout>  3、别忘了添加权限：<uses-permission android:name="android.permission.CAMERA" />    <uses-feature android:name="android.hardware.camera" />  <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />    源码下载==》原创文章，转载请注明出处：http://www.blog.csdn.net/tangcheng_ok