Intent调用系统拍照程序，返回图片太小的问题

之前採用的方式（返回的照片会被压缩，不能达到预期效果）：

Intent intent = new Intent();

Intent intent_camera = getPackageManager()

.getLaunchIntentForPackage("com.android.camera");

if (intent_camera != null) {

intent.setPackage("com.android.camera");

}

intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);

startActivityForResult(intent, 100);

回调：（在返回的data中区数据，然后保存，然后再拿到路径。这样图片是已经压缩了的）

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

Log.d("TAG", "requestCode" + requestCode + " ,resultCode" + resultCode

+ data);

if (requestCode == 100 && resultCode == Activity.RESULT_OK

&& null != data) {

// 照相返回界面

String sdState = Environment.getExternalStorageState();

if (!sdState.equals(Environment.MEDIA_MOUNTED)) {

Toast.makeText(getApplicationContext(), "未找到SDK",

Toast.LENGTH_LONG).show();

Log.d("TAG", "sd card unmount");

return;

}

new DateFormat();

String name = DateFormat.format("yyyyMMdd_hhmmss",

Calendar.getInstance(Locale.CHINA))

+ ".jpg";

Log.d("TAG", "name.........." + name);

Bundle bundle = data.getExtras();

// 获取相机返回的数据，并转换为图片格式

Bitmap bitmap;

String filename = null;

bitmap = (Bitmap) bundle.get("data");

FileOutputStream fout = null;

// 定义文件存储路径

File file = new File("/sdcard/e_community/");

if (!file.exists()) {

file.mkdirs();

}

filename = file.getPath() + "/" + name;

try {

fout = new FileOutputStream(filename);

// 对图片进行压缩

bitmap.compress(Bitmap.CompressFormat.PNG, 100, fout);

// FileOutputStream outputStream = new FileOutputStream(filename); // 文件输出流  

//        outputStream.write(data); // 写入sd卡中  

//        outputStream.close(); // 关闭输出流  

} catch (FileNotFoundException e) {

e.printStackTrace();

} finally {

try {

fout.flush();

fout.close();

} catch (IOException e) {

e.printStackTrace();

}

}

Log.d("TAG", "相片路径" + filename);

}

解决图片太小的问题。就是在启动相机的时候设置好照片保存的路径以及名称，这样data中就不会返回数据而是null，这样就能够依据自己设置的路径已经设置的名称通过BitmapFactory.decodeFile(imageUrl.get(j),option);获取到照片。

启动代码例如以下：

private String camera_path = Environment.getExternalStorageDirectory().toString()+"/e_community/";保存的路径

private String camera_photo_name;//保存的名称

Uri mOutPutFileUri;

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

File path1 = new File(PhotoUtil.camera_path);

 if(!path1.exists()){

  path1.mkdirs();

 }

 camera_photo_name=System.currentTimeMillis()+".png";

 File file = new File(path1,camera_photo_name);

 mOutPutFileUri = Uri.fromFile(file);

 intent.putExtra(MediaStore.EXTRA_OUTPUT, mOutPutFileUri);

startActivityForResult(intent, 111);

回调：

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

Log.d("TAG", "requestCode" + requestCode + " ,resultCode" + resultCode

+ data);

if (requestCode == 111&&resultCode==Activity.RESULT_OK) {

// 照相返回界面

String filename = PhotoUtil.camera_path+ "/" + camera_photo_name;

Log.d("TAG", "相片路径" + filename);

}

}