我找到了一个关于图库选取器的代码，它从谷歌图片中挑选照片。但我想从普通画廊中挑选照片。这是代码：
public class ImageCrop {
private static final String TAG = "ImageCrop";
private static final boolean REMOVE_TEMP_FILE = true;
private static final boolean DEBUG = false;
Context context;
public static final int PICK_FROM_CAMERA = 0;
public static final int PICK_FROM_ALBUM = 1;
public static final int PERMISSION_FROM_CAMERA = 3;
private static final int PHOTO_SIZE = 1000;
private static final String ACTIVITY_NAME_PHOTOS = "com.google.android.apps.photos";
private static final String ACTIVITY_NAME_PLUS = "com.google.android.apps.plus";
private static boolean mUseActivityPhoto = false;
private static boolean mUseActivityPlus = false;
private static Uri mImageCaptureUri;
private static Bitmap mCropBitmap;
private static String mTempImagePath;
private static int mLastAction = PICK_FROM_CAMERA;
private static final String CAMERA_TEMP_PREFIX = "camera_";
private static final String CROP_TEMP_PREFIX = "crop_";
private static final String IMAGE_EXT = ".png";
public static void checkPackages(Activity context, Intent intentPhoto) {
final PackageManager pm = context.getPackageManager();
final Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
mUseActivityPhoto = false;
mUseActivityPlus = false;
final List<ResolveInfo> infos = pm.queryIntentActivities(intent, PackageManager.MATCH_ALL);
for (ResolveInfo info : infos) {
if(info.activityInfo.packageName.equals(ACTIVITY_NAME_PHOTOS)) {
final List<ResolveInfo> photoInfos = pm.queryIntentActivities(intentPhoto, PackageManager.MATCH_ALL);
for (ResolveInfo photoInfo : photoInfos) {
if(photoInfo.activityInfo.packageName.equals(ACTIVITY_NAME_PHOTOS)) {
Log.d(TAG,"mUseActivityPhoto TRUE");
mUseActivityPhoto = true;
break;
}
}
}
else if(info.activityInfo.packageName.equals(ACTIVITY_NAME_PLUS)) {
final List<ResolveInfo> photoInfos = pm.queryIntentActivities(intentPhoto, PackageManager.MATCH_ALL);
for (ResolveInfo photoInfo : photoInfos) {
if(photoInfo.activityInfo.packageName.equals(ACTIVITY_NAME_PLUS)) {
Log.d(TAG,"mUseActivityPlus TRUE");
mUseActivityPlus = true;
break;
}
}
}
}
}
public static void takeCameraAction(Activity context) {
if(DEBUG)
Log.d(TAG, "takeCameraAction");
if (ImageCrop.checkPermissions(context)) {
ImageCrop.doTakeCameraAction(context);
} else {
mLastAction = ImageCrop.PICK_FROM_CAMERA;
}
}
public static void takeAlbumAction(Activity context) {
if(DEBUG)
Log.d(TAG, "takeAlbumAction");
if(ImageCrop.checkPermissions(context)) {
ImageCrop.doTakeAlbumAction(context);
}
else {
mLastAction = ImageCrop.PICK_FROM_ALBUM;
}
}
private static void doTakeCameraAction(Activity context) {
if(DEBUG)
Log.d(TAG, "doTakeCameraAction");
final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
final String url = CAMERA_TEMP_PREFIX + String.valueOf(System.currentTimeMillis()) + IMAGE_EXT;
final File file = new File(Environment.getExternalStorageDirectory(), url);
mTempImagePath = file.getAbsolutePath();
mImageCaptureUri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
context.startActivityForResult(intent, PICK_FROM_CAMERA);
}
private static void doTakeAlbumAction(Activity context) {
if(DEBUG)
Log.d(TAG, "doTakeAlbumAction");
final Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType(MediaStore.Images.Media.CONTENT_TYPE);
checkPackages(context, intent);
if(mUseActivityPhoto) {
if(DEBUG)
Log.d(TAG, "doTakeAlbumAction setPackage ACTIVITY_NAME_PHOTOS");
intent.setPackage(ACTIVITY_NAME_PHOTOS);
}
else if(mUseActivityPlus) {
if(DEBUG)
Log.d(TAG, "doTakeAlbumAction setPackage ACTIVITY_NAME_PLUS");
intent.setPackage(ACTIVITY_NAME_PLUS);
}
context.startActivityForResult(intent, ImageCrop.PICK_FROM_ALBUM);
}
private static void removeTempFile() {
// 캡쳐 파일 삭제
if(mImageCaptureUri != null) {
final String capturePath = mImageCaptureUri.getPath();
if(capturePath != null) {
Log.w(TAG, "removeTempFile capturePath=" + capturePath);
final File captureFile = new File(capturePath);
if(captureFile != null) {
if (captureFile.getAbsoluteFile().exists()) {
captureFile.delete();
}
}
}
}
if(mTempImagePath != null) {
Log.w(TAG, "removeTempFile mTempImagePath=" + mTempImagePath);
final File tempFile = new File(mTempImagePath);
if(tempFile != null) {
if(tempFile.getAbsoluteFile().exists()) {
tempFile.delete();
}
}
}
}
private static void removeDataFile(Intent data) {
if(data == null) {
Log.w(TAG, "removeDataFile data == null");
return;
}
if(data.getData() == null) {
Log.w(TAG, "removeDataFile data.getData() == null");
return;
}
final String dataPath = data.getData().getPath();
if(dataPath == null) {
Log.w(TAG, "removeDataFile dataPath == null");
return;
}
Log.w(TAG, "removeDataFile dataPath=" + dataPath);
final File dataFile = new File(dataPath);
if(dataFile == null) {
Log.w(TAG, "removeDataFile dataFile == null");
return;
}
if(dataFile.getAbsoluteFile().exists()) {
dataFile.delete();
}
}
private static File cropFileFromPhotoData(Activity context, Intent data) {
if(DEBUG)
Log.d(TAG, "cropFileFromPhotoData");
if(data.getData() == null) {
Log.e(TAG, "cropFileFromPhotoData data.getData() == null");
return null;
}
final String dataPath = data.getData().getPath();
if (dataPath == null) {
Log.e(TAG, "cropFileFromPhotoData dataPath == null");
return null;
}
File dataFile = null;
if(dataPath.startsWith("/external")) {
final Uri dataUri = Uri.parse("content://media"+dataPath);
final String dataFilePath = getRealPathFromURI(context, dataUri);
dataFile = new File(dataFilePath);
boolean exist = dataFile.exists();
long length = dataFile.length();
if(DEBUG)
Log.d(TAG, "cropFileFromPhotoData dataFilePath=" + dataFilePath + " exist="+exist + " length=" +length);
}
else {
dataFile = new File(dataPath);
boolean exist = dataFile.exists();
long length = dataFile.length();
if(DEBUG)
Log.d(TAG, "cropFileFromPhotoData dataPath=" + dataPath + " exist="+exist + " length=" +length);
}
return dataFile;
}
public static void pickFromCamera(Activity context, Intent data) {
if(DEBUG)
Log.d(TAG, "pickFromCamera => launchCropActivity");
if(mTempImagePath == null || mTempImagePath.isEmpty()) {
Log.e(TAG, "pickFromCamera mTempImagePath error");
return;
}
}
public static String getRealPathFromURI(Activity context, Uri contentUri) {
Cursor cursor = null;
final String[] proj = { MediaStore.Images.Media.DATA };
String ret = null;
try {
cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
final int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
ret = cursor.getString(column_index);
}
catch(Exception e) {
Log.e(TAG, "getRealPathFromURI exception");
return null;
}
if (cursor != null) {
cursor.close();
}
return ret;
}
if(readEnable && writeEnable && cameraEnable) {
switch(mLastAction) {
case ImageCrop.PICK_FROM_CAMERA:
if(DEBUG)
Log.d(TAG, "doTakeCameraAction");
ImageCrop.doTakeCameraAction(context);
break;
case ImageCrop.PICK_FROM_ALBUM:
if(DEBUG)
Log.d(TAG, "doTakeAlbumAction");
ImageCrop.doTakeAlbumAction(context);
break;
}
}
}
}
我想用这种方式挑选照片：
private void selectCover() {
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(Intent.createChooser(intent, getText(R.string.label_select_img)), SELECT_COVER);
}
但是我无法将其转换为普通画廊。怎么解决这个？感谢
答案 0 :(得分：1)
您可以使用它，它只会打开Gallery：
public void handleGallery(){
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, REQUEST_CODE_GALLERY);
}
public void handleCamera(){
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
try {
intent.putExtra("return-data", true);
startActivityForResult(intent, REQUEST_CODE_TAKE_PICTURE);
} catch (Exception e) {
Log.d("error", "cannot take picture", e);
}
}
然后onActivityResult：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK) {
return;
}
Bitmap bitmap;
switch (requestCode) {
case REQUEST_CODE_GALLERY:
try {
Uri uri = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
Bitmap bitmapScaled = Bitmap.createScaledBitmap(bitmap, 800, 800, true);
Drawable drawable=new BitmapDrawable(bitmapScaled);
mImage.setImageDrawable(drawable);
mImage.setVisibility(View.VISIBLE);
mImageString=HelperUtils.encodeTobase64(bitmap);
} catch (IOException e) {
Log.v("galeri", "hata var : "+e.getMessage());
}
} catch (Exception e) {
Log.v("kamera", "hata var : "+e.getMessage());
}
break;
case REQUEST_CODE_TAKE_PICTURE:
bitmap = (Bitmap) data.getExtras().get("data");
mImage.setImageBitmap(bitmap);
mImage.setVisibility(View.VISIBLE);
mImageString=HelperUtils.encodeTobase64(bitmap);
break;
}
super.onActivityResult(requestCode, resultCode, data);
}