使用 createChooser 選取特定格式的檔案

public class SelectAudioDemo extends Activity {
    private static final int SELECT_AUDIO = 2;
    String selectedPath = "";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //
        Intent intent = new Intent();
        intent.setType("audio/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select Audio "), SELECT_AUDIO);
    }
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == SELECT_AUDIO) {
                System.out.println("SELECT_AUDIO");
                Uri selectedImageUri = data.getData();
                selectedPath = getPath(selectedImageUri);
                System.out.println("SELECT_AUDIO Path : " + selectedPath);
                doFileUpload();
            }
        }
    }
    public String getPath(Uri uri) {
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }
}