android.content.Intent#ACTION_OPEN_DOCUMENT源码实例Demo

/**
 */
private boolean importThemes( Context context )
{
    if (context != null)
    {
        if (isImporting || isExporting) {
            Log.e("importThemes","Busy! Already importing/exporting.. ignoring request");
            return false;

        } else {
            Intent intent = new Intent((Build.VERSION.SDK_INT >= 19 ? Intent.ACTION_OPEN_DOCUMENT : Intent.ACTION_GET_CONTENT));
            intent.setType("text/*");
            startActivityForResult(intent, IMPORT_REQUEST);
            return true;
        }
    }
    return false;
}
 

@Override
public boolean onMenuItemClick(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.apk:
            Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("application/vnd.android.package-archive");
            startActivityForResult(intent, REQUEST_READ_APK);
            break;
        case R.id.sort:
            mIsSortByTime = !mIsSortByTime;
            item.setIcon(mIsSortByTime ? R.drawable.ic_a_white_24dp : R.drawable.ic_timer_white_24dp);
            mRefreshView.setRefreshing(true);
            mToolbar.getMenu().getItem(1).setEnabled(false);
            mDisposables.add(mPresenter.getAndSort(this, mIsSortByTime));
            break;
    }

    return true;
}
 

@Override
public void onClick(View v) {
	switch (v.getId()) {
		case R.id.reset_icon:
			File customIconFile = MyCache.getCustomIconFile(this, component);
			customIconFile.delete();
			Toast.makeText(ChangeIconActivity.this, "The custom icon was deleted", Toast.LENGTH_LONG).show();
			((Button)findViewById(R.id.reset_icon)).setEnabled(false);
			break;
		case R.id.choose_icon_from_memory:
			if (Build.VERSION.SDK_INT >= 19) {
				Intent customIconIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
				customIconIntent.addCategory(Intent.CATEGORY_OPENABLE);
				customIconIntent.setType("image/png");
				startActivityForResult(customIconIntent, 0);
			} else {
				Intent intent = new Intent(this, FileActivity.class);
				startActivityForResult(intent, FileActivity.GET_IMAGE);
			}
			break;
	}
}
 

public void folderImageButtonClick() {
    if (Pref.getString(PREF_numberwall_background, null) == null) {
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
            if (SdcardImportExport.checkPermissions(activity, true, ASK_FILE_PERMISSION)) {
                final Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
                intent.addCategory(Intent.CATEGORY_OPENABLE);
                intent.setType("image/*");
                startActivityForResult(intent, LOAD_IMAGE_RESULTS);
            } else {
                if (JoH.ratelimit("need-file-permission",10)) {
                    //JoH.static_toast_short("Need file permission");
                }
            }
        }
    } else {
        binding.getSprefs().put(PREF_numberwall_background, null);
        refreshBitmap();
    }
}
 

public void pickImage() {
  if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
    startActivityForResult(new Intent(Intent.ACTION_GET_CONTENT).setType("image/*"),
        REQUEST_PICK_IMAGE);
  } else {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("image/*");
    startActivityForResult(intent, REQUEST_SAF_PICK_IMAGE);
  }
}
 

public void openDocument() {
	Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
	intent.addCategory(Intent.CATEGORY_OPENABLE);
	intent.setType(MIME_TYPE);
	intent.putExtra(EXTRA_SHOW_ADVANCED, true);

	this.getActionHandler().callStartActivityForResult(intent, new TGSafOpenHandler(this));
}
 

/**
 * 4.4以上版本使用
 * @see "http://blog.csdn.net/tempersitu/article/details/20557383"
 * 
 * @param activity
 * @param requestCode
 */
@TargetApi(Build.VERSION_CODES.KITKAT)
public static void choicePicFromAlbum_kitkat(Activity activity, int requestCode) {
    // 来自相册
    Intent albumIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    albumIntent.addCategory(Intent.CATEGORY_OPENABLE);
    albumIntent.setType("image/*");
    activity.startActivityForResult(albumIntent, requestCode);
}
 

/**
 * 获取存储访问框架的意图
 * @param type 跳转类型
 * @return 存储访问框架的意图
 */
public static Intent getOpenDocumentIntent(final String type) {
    try {
        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        intent.setType(type);
        return intent;
    } catch (Exception e) {
        LogPrintUtils.eTag(TAG, e, "getOpenDocumentIntent");
    }
    return null;
}
 

@NeedsPermission(Manifest.permission.READ_EXTERNAL_STORAGE) public void pickImage() {
  if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
    startActivityForResult(new Intent(Intent.ACTION_GET_CONTENT).setType("image/*"),
        REQUEST_PICK_IMAGE);
  } else {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("image/*");
    startActivityForResult(intent, REQUEST_SAF_PICK_IMAGE);
  }
}
 

/**
 * Get the Intent for selecting content to be used in an Intent Chooser.
 *
 * @return The intent for opening a file with Intent.createChooser()
 * @author paulburke
 */
@TargetApi(Build.VERSION_CODES.KITKAT)
private static Intent createGetMultipleContentIntent(String mimeType) {
    // Implicitly allow the user to select a particular kind of data
    final Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    // The MIME data type filter
    intent.setType(mimeType);
    // EXTRA_ALLOW_MULTIPLE: added in API level 18
    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
    // Only return URIs that can be opened with ContentResolver
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    return intent;
}
 

/**
 * 4.4以上版本使用
 * @see "http://blog.csdn.net/tempersitu/article/details/20557383"
 * 
 * @param activity
 * @param requestCode
 */
public static void choicePicFromAlbum_kitkat(Activity activity, int requestCode) {
    // 来自相册
    Intent albumIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    albumIntent.addCategory(Intent.CATEGORY_OPENABLE);
    albumIntent.setType("image/*");
    activity.startActivityForResult(albumIntent, requestCode);
}
 

public static Intent pickFile(boolean onlyImages) {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    if (onlyImages) {
        intent.setType("image/*");
    } else {
        intent.setType("*/*");
    }
    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
    intent.setAction(Intent.ACTION_GET_CONTENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    return Intent.createChooser(intent, "Select file");
}
 

@TargetApi(Build.VERSION_CODES.KITKAT)
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle presses on the action bar items
    switch(item.getItemId()) {
        case R.id.action_start_selection:
            listener.startMultiSelect();
            return true;
        case R.id.action_settings:
            Intent intentSettings = new Intent(getActivity(), SettingsActivity.class);
            startActivity(intentSettings);
            return true;
        case R.id.action_import:
            Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
            intent.putExtra(Intent.EXTRA_MIME_TYPES, new String[] {"text/plain", "text/html", "text/x-markdown"});
            intent.setType("*/*");

            try {
                getActivity().startActivityForResult(intent, MainActivity.IMPORT);
            } catch (ActivityNotFoundException e) {
                showToast(R.string.error_importing_notes);
            }
            return true;
        case R.id.action_about:
            DialogFragment aboutFragment = new AboutDialogFragment();
            aboutFragment.show(getFragmentManager(), "about");
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}
 

/**
 * 获取导入规则列表的 SAF (Storage Access Framework) 的 Intent
 */
public static Intent getImportRuleListSAFIntent() {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType(BACKUP_MIME_TYPE);
    intent.putExtra(Intent.EXTRA_TITLE, getDefaultBackupFilename());

    return intent;
}
 

private void pickImage(Activity a) {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("image/*");
    a.startActivityForResult(intent, PICK_IMAGE_REQUEST_CODE);
}
 

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.main_menu_freeze_all:
            // This is the same as clicking on the batch freeze shortcut
            // so we just forward the request to DummyActivity
            Intent intent = new Intent(DummyActivity.PUBLIC_FREEZE_ALL);
            intent.setComponent(new ComponentName(this, DummyActivity.class));
            startActivity(intent);
            return true;
        case R.id.main_menu_settings:
            Intent settingsIntent = new Intent(this, SettingsActivity.class);
            Bundle extras = new Bundle();
            extras.putBinder("profile_service", mServiceWork.asBinder());
            settingsIntent.putExtra("extras", extras);
            startActivity(settingsIntent);
            return true;
        case R.id.main_menu_create_freeze_all_shortcut:
            Intent launchIntent = new Intent(DummyActivity.PUBLIC_FREEZE_ALL);
            launchIntent.setComponent(new ComponentName(this, DummyActivity.class));
            launchIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
            Utility.createLauncherShortcut(this, launchIntent,
                    Icon.createWithResource(this, R.mipmap.ic_freeze),
                    "shelter-freeze-all", getString(R.string.freeze_all_shortcut));
            return true;
        case R.id.main_menu_install_app_to_profile:
            Intent openApkIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
            openApkIntent.addCategory(Intent.CATEGORY_OPENABLE);
            openApkIntent.setType("application/vnd.android.package-archive");
            startActivityForResult(openApkIntent, REQUEST_DOCUMENTS_CHOOSE_APK);
            return true;
        case R.id.main_menu_show_all:
            Runnable update = () -> {
                mShowAll = !item.isChecked();
                item.setChecked(mShowAll);
                LocalBroadcastManager.getInstance(this)
                        .sendBroadcast(new Intent(AppListFragment.BROADCAST_REFRESH));
            };

            if (!item.isChecked()) {
                new AlertDialog.Builder(this)
                        .setMessage(R.string.show_all_warning)
                        .setPositiveButton(R.string.first_run_alert_continue,
                                (dialog, which) -> update.run())
                        .setNegativeButton(R.string.first_run_alert_cancel, null)
                        .show();
            } else {
                update.run();
            }
            return true;
    }
    return super.onOptionsItemSelected(item);
}
 

public void loadPicture() {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("image/*");
    startActivityForResult(intent, REQUEST_FILE);
}
 

private void importNotebook(){
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);

    intent.addCategory(Intent.CATEGORY_OPENABLE);

    intent.setType("application/zip");

    startActivityForResult(intent, Utils.READ_REQUEST_CODE);
}
 

@Override
public void onClick(View v) {
    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);

    intent.addCategory(Intent.CATEGORY_OPENABLE);

    intent.setType("*/*");

    startActivityForResult(intent, Utils.READ_REQUEST_CODE);
}
 

/**
 * ファイル読み込み用のUriを要求するヘルパーメソッド
 * KITKAT以降で個別のファイル毎にパーミッション要求する場合
 * @param mime
 * @return
 */
private static Intent prepareOpenDocumentIntent(@NonNull final String mime) {
	final Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
	intent.setType(mime);
	return intent;
}