Android 相机或相册选择图片裁剪

public class SelectPicUtil {

public static final int PHOTO_REQUEST_CUT = 4;
public static final int PHOTO_REQUEST_GALLERY = 2;
public static final int PHOTO_REQUEST_CAMERA = 3;

private static Uri mCutTempFile; //剪切图片后输出的路径
private static File mCameraTempFile; //拍照后的临时文件

public static void selectPic(final Activity activity) {
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
ToastUtil.showText(activity, activity.getString(R.string.no_card), ToastUtil.ONE_SECOND);
return;
}

AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setItems(R.array.img_select, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
openCamera(activity);
break;
case 1:
openGallery(activity);
break;
}
}
});
AlertDialog dialog = builder.create();
dialog.show();
}

/*
* 从相册获取
*/
public static void openGallery(Activity activity) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
activity.startActivityForResult(intent, PHOTO_REQUEST_GALLERY);
}

/*
* 从相机获取
*/
public static void openCamera(Activity activity) {
mCameraTempFile = new File(Environment.getExternalStorageDirectory(), "photo_file");
Uri uri = Uri.fromFile(mCameraTempFile);

Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
activity.startActivityForResult(intent, PHOTO_REQUEST_CAMERA);
}

/*
* 剪切图片
*/
public static void openCropActivity(Activity activity,Uri uri) {
mCutTempFile = Uri.parse("file://" + "/" + Environment.getExternalStorageDirectory().getPath() + "/" + "small.jpg");

Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/*");
intent.putExtra("crop", "true");
intent.putExtra("outputFormat", "JPEG");// 图片格式
intent.putExtra("noFaceDetection", true);// 取消人脸识别
intent.putExtra(MediaStore.EXTRA_OUTPUT, mCutTempFile);
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());

// 裁剪框的比例，1：1
//intent.putExtra("aspectX", 1);
//intent.putExtra("aspectY", 1);
// 裁剪后输出图片的尺寸大小
//intent.putExtra("outputX", 250);
//intent.putExtra("outputY", 250);

activity.startActivityForResult(intent, PHOTO_REQUEST_CUT);
}

public static Bitmap getAfterCropBitmap(Activity activity){
File cameraTempFile2=SelectPicUtil.getCameraTempFile();
if (cameraTempFile2 != null) {
cameraTempFile2.delete();
}

Uri mCutTempFile=SelectPicUtil.getCutTempFile();
Bitmap bitmap;
try {
bitmap = BitmapFactory.decodeStream(activity.getContentResolver().openInputStream(mCutTempFile));
} catch (FileNotFoundException e) {
return null;
}
return bitmap;
}

public static File getCameraTempFile() {
return mCameraTempFile;
}

public static Uri getCutTempFile() {
return mCutTempFile;
}

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case SelectPicUtil.PHOTO_REQUEST_GALLERY:
if (data != null)  SelectPicUtil.openCropActivity(this,data.getData());
break;
case SelectPicUtil.PHOTO_REQUEST_CAMERA:
File cameraTempFile=SelectPicUtil.getCameraTempFile();
if (cameraTempFile != null) SelectPicUtil.openCropActivity(this,Uri.fromFile(cameraTempFile));
break;
case SelectPicUtil.PHOTO_REQUEST_CUT:
mImageView.setImageBitmap(getAfterCropBitmap(this));
break;
}
}

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><!--读取储存-->