參考鏈接：http://www.linuxidc.com/Linux/2013-11/92892p3.htm

原文鏈接：http://blog.csdn.net/tangcheng_ok/article/details/7036871

增加使用相機和寫入權限：

<uses-permission android:name="android.permission.CAMERA" /><uses-feature android:name="android.hardware.camera" /><uses-feature android:name="android.hardware.camera.autofocus" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

主程序代碼：

package com.example.carejulygpsmap;import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem;import java.io.ByteArrayOutputStream; import java.io.File; 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; import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.view.View; import android.widget.Button; import android.widget.ImageView;public class CareJulyActivity extends ActionBarActivity {private final static String TAG = "CameraActivity"; private SurfaceView surfaceView; private SurfaceHolder surfaceHolder; private Camera camera; private File picture; private Button btnSave; private static final int NONE = 0;private static final int PHOTO_GRAPH = 1;// 拍照private static final int PHOTO_ZOOM = 2; // 縮放private static final int PHOTO_RESOULT = 3;// 結果private static final String IMAGE_UNSPECIFIED = "image/*";private ImageView imageView = null;private Button btnPhone = null;private Button btnTakePicture = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); this.requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_care_july); setupViews(); // imageView = (ImageView) findViewById(R.id.imageView); // btnPhone = (Button) findViewById(R.id.btnPhone); // btnPhone.setOnClickListener(onClickListener); // btnTakePicture = (Button) findViewById(R.id.btnTakePicture); // btnTakePicture.setOnClickListener(onClickListener);}// @Override//src // protected void onCreate(Bundle savedInstanceState) { // super.onCreate(savedInstanceState); // setContentView(R.layout.activity_care_july); // }@Override//srcpublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.care_july, menu);return true;}@Override//srcpublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}//CamCapprivate 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 //保存圖片，不過保存的圖片較小，保存在根目錄 的wishchin文件夾里面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()+"/wishchin/"+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; } }; }
界面代碼：

<?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.SurfaceViewandroid:id="@+id/camera_preview"android:layout_width="462dp"android:layout_height="534dp"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="txt_save" /> </LinearLayout>

總結

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