android.content.Intent#ACTION_PICK源码实例Demo

public static int getAction(@Nullable Intent intent) {
    if (intent == null) return ACTION_DEFAULT;
    String action = intent.getAction();
    if (action != null) {
        switch (action) {
            case ACTION_ADW_PICK_ICON:
            case ACTION_TURBO_PICK_ICON:
            case ACTION_LAWNCHAIR_ICONPACK:
            case ACTION_NOVA_LAUNCHER:
            case ACTION_ONEPLUS_PICK_ICON:
            case ACTION_PLUS_HOME:
                return ICON_PICKER;
            case Intent.ACTION_PICK:
            case Intent.ACTION_GET_CONTENT:
                return IMAGE_PICKER;
            case Intent.ACTION_SET_WALLPAPER:
                return WALLPAPER_PICKER;
            default:
                return ACTION_DEFAULT;
        }
    }

    return ACTION_DEFAULT;
}
 

private void openGallery() {
  try {
    leftActivityWithPurpose = true;
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
      ||
      ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
      ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_IMAGE_SELECTOR);
    } else {
      Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
      intent.setType("image/*");
      startActivityForResult(intent, REQUEST_IMAGE_SELECTOR);
    }
  }
  catch (Exception e) {
    e.printStackTrace();
  }
}
 

/**
 * This call the intent to selected the picture for activity screen
 * @param headerName the header name of popUp that you need to shown
 * @return return true if the photo was taken or false if it was not.
 */
public boolean selectedPicture(String headerName) {

    try {
        Intent intent = new Intent(
                Intent.ACTION_PICK,
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        intent.setType("image/*");
        this.actionPictureObject.getActivity().startActivityForResult(
                Intent.createChooser(intent, (!headerName.equals("") ? headerName : "Magical Camera")),
                MagicalCamera.SELECT_PHOTO);

        return true;
    }catch (Exception ev){
        return false;
    }
}
 

public ArrayList<String> listAlldir() {
    Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    Uri uri = intent.getData();
    ArrayList<String> list = new ArrayList<String>();
    String[] proj = {
            MediaStore.Images.Media.DATA
    };
    String orderBy = MediaStore.Images.Media.DATE_TAKEN + " DESC";
    Cursor cursor = context.getContentResolver().query(uri, proj, null, null, orderBy);
    if (cursor == null) {
        return null;
    }
    while (cursor.moveToNext()) {
        String path = cursor.getString(0);
        list.add(new File(path).getAbsolutePath());
    }
    return list;
}
 

@Override
public void onClick(View v) {
  Intent intent = new Intent(Intent.ACTION_PICK);
  intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
  intent.setClassName(ShareActivity.this, AppPickerActivity.class.getName());
  startActivityForResult(intent, PICK_APP);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    mProgressDialog = new ProgressDialog(PickImageActivity.this);
    mProgressDialog.setMessage(getString(R.string.lc_please_wait));
    mProgressDialog.setIndeterminate(true);
    mProgressDialog.setCancelable(false);

    Intent startIntent = getIntent();
    if (savedInstanceState == null && startIntent != null) {
        mCropImage = startIntent.getBooleanExtra(EXTRA_CROP, false);
        mScale = startIntent.getBooleanExtra(EXTRA_SCALE, false);
        mScaleUp = startIntent.getBooleanExtra(EXTRA_SCALE_UP, false);
        if (startIntent.hasExtra(EXTRA_ASPECT_X) || startIntent.hasExtra(EXTRA_ASPECT_Y)) {
            mAspectSize = new Point(startIntent.getIntExtra(EXTRA_ASPECT_X, 0),
                    startIntent.getIntExtra(EXTRA_ASPECT_Y, 0));
        }
        if (startIntent.hasExtra(EXTRA_OUTPUT_X) || startIntent.hasExtra(EXTRA_OUTPUT_Y)) {
            mOutputSize = new Point(startIntent.getIntExtra(EXTRA_OUTPUT_X, 0),
                    startIntent.getIntExtra(EXTRA_OUTPUT_Y, 0));
        }
        if (startIntent.hasExtra(EXTRA_SPOTLIGHT_X) || startIntent.hasExtra(EXTRA_SPOTLIGHT_Y)) {
            mSpotlightSize = new Point(startIntent.getIntExtra(EXTRA_SPOTLIGHT_X, 0),
                    startIntent.getIntExtra(EXTRA_SPOTLIGHT_Y, 0));
        }

        Intent intent = new Intent(Intent.ACTION_PICK);
        intent.setType("image/*");
        startActivityForResult(Intent.createChooser(intent, getString(R.string.imgpick_dialog_title)),
                REQ_PICK_IMAGE);
    } else {
        finish();
    }
}
 

@AfterPermissionGranted(RC_CAMERA_PERMISSIONS)
private void showImagePicker() {
    // Check for camera permissions
    if (!EasyPermissions.hasPermissions(this, cameraPerms)) {
        EasyPermissions.requestPermissions(this,
                "This sample will upload a picture from your Camera",
                RC_CAMERA_PERMISSIONS, cameraPerms);
        return;
    }

    // Choose file storage location
    File file = new File(getExternalCacheDir(), UUID.randomUUID().toString());
    mFileUri = Uri.fromFile(file);

    // Camera
    final List<Intent> cameraIntents = new ArrayList<Intent>();
    final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    final PackageManager packageManager = getPackageManager();
    final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
    for (ResolveInfo res : listCam){
        final String packageName = res.activityInfo.packageName;
        final Intent intent = new Intent(captureIntent);
        intent.setComponent(new ComponentName(packageName, res.activityInfo.name));
        intent.setPackage(packageName);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, mFileUri);
        cameraIntents.add(intent);
    }

    // Image Picker
    Intent pickerIntent = new Intent(Intent.ACTION_PICK,
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

    Intent chooserIntent = Intent.createChooser(pickerIntent,
            getString(R.string.picture_chooser_title));
    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new
            Parcelable[cameraIntents.size()]));
    startActivityForResult(chooserIntent, TC_PICK_IMAGE);
}
 

private void createChooser() {
    if(ContextCompat.checkSelfPermission(UploadNewsFeedActivity.this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)== PackageManager.PERMISSION_DENIED){

        if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){
            requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, 121);
        }

        return;

    }

    Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    intent.setType("image/*");
    startActivityForResult(Intent.createChooser(intent, "CHOOSE PHOTO"), PICK_IMAGE_REQUEST);
}
 

/**
 * Launches the Contact Picker to select a single contact.
 */
private void pickContactAsync() {
    final CordovaPlugin plugin = (CordovaPlugin) this;
    Runnable worker = new Runnable() {
        public void run() {
            Intent contactPickerIntent = new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
            plugin.cordova.startActivityForResult(plugin, contactPickerIntent, CONTACT_PICKER_RESULT);
        }
    };
    this.cordova.getThreadPool().execute(worker);
}
 

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    if (!StaticUtils.isPermissionsGranted(this, permissions)) {
        Toast.makeText(this, R.string.msg_missing_storage_permission, Toast.LENGTH_SHORT).show();
        finish();
    } else {
        Intent intent = new Intent(Intent.ACTION_PICK);
        intent.setType("image/*");
        startActivityForResult(intent, ACTION_PICK_IMAGE);
    }
}
 

private void createChooser() {
    if (ContextCompat.checkSelfPermission(NewsfeedTry.this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, 121);
        }

        return;

    }

    Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    intent.setType("image/*");
    startActivityForResult(Intent.createChooser(intent, "CHOOSE PHOTO"), PICK_IMAGE_REQUEST);
}
 

/**
 * Starts Activity for selecting and then viewing a previous encounter
 */
private void pickSavedProcedure() {
    Intent i = new Intent(Intent.ACTION_PICK);
    i.setType(Encounters.CONTENT_TYPE);
    i.setData(Encounters.CONTENT_URI);
    onSaveAppState(i);
    startActivityForResult(i, PICK_SAVEDPROCEDURE);
}
 

public void chooseContact(View v) {
    Intent intent = new Intent(Intent.ACTION_PICK,
            ContactsContract.Contacts.CONTENT_URI);
    intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);
    startActivityForResult(intent, ACT_RESULT_CHOOSE_CONTACT);
    //IncomingSms.sendNotification(MainActivity.this, "56.5555555,56.7777777");
}
 

/**
 * This checks to see if there is a suitable activity to handle the `ACTION_PICK` intent
 * and returns it if found. {@link Intent#ACTION_PICK} is for picking an image from an external app.
 *
 * @return A prepared intent if found.
 */
@Nullable
private Intent createPickIntent() {
    if (pickerType != PickerType.CAMERA) {
        Intent picImageIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        if (picImageIntent.resolveActivity(getActivity().getPackageManager()) != null) {
            return picImageIntent;
        }
    }
    return null;
}
 

/**
 * Request a picture from gallery
 * Result will be available from {@link Activity#onActivityResult(int, int, Intent)}.
 * It will return the path to the image if locally stored. If retrieved from e.g. a cloud
 * service, the image will get copied to app-cache folder and it's path returned.
 */
public void requestGalleryPicture() {
    if (!(_context instanceof Activity)) {
        throw new RuntimeException("Error: ShareUtil.requestGalleryPicture needs an Activity Context.");
    }
    Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    try {
        ((Activity) _context).startActivityForResult(intent, REQUEST_PICK_PICTURE);
    } catch (Exception ex) {
        Toast.makeText(_context, "No gallery app installed!", Toast.LENGTH_SHORT).show();
    }
}
 

/**
 * Starts the select photo intent.
 */
private void selectPhoto() {
    Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
    photoPickerIntent.setType("image/*");
    startActivityForResult(photoPickerIntent, SELECT_PHOTO_INTENT);
}
 

public static void chooseGalleryImage(Activity activity, int requestCode) {
    Intent intent = new Intent(Intent.ACTION_PICK, null);
    intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
            "image/*");
    activity.startActivityForResult(intent, requestCode);
}
 

@OnClick(R.id.palette)
public void btn_Palette(View v) {
    Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, RESULT_LOAD_IMAGE);
}
 

private void chooseImageFile() {
    Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
    photoPickerIntent.setType("image/*");
    startActivityForResult(photoPickerIntent, SELECT_PHOTO_ACTION);
}
 

/**
 * Activity调用系统相册
 *
 * @param activity
 * @param requestCode
 */
public void requestPhotoPick(Activity activity, int requestCode) {
    Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    activity.startActivityForResult(intent, requestCode);
}