内置的画廊在特定的文件夹 [英] Built-in gallery in specific folder

问题描述

可能重复：
  画廊与文件夹筛选

我用下面的code开一个画廊我的应用程序里面

I'm using following code to open a gallery inside of my app

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, TEST_RESULT);

我需要使用BUIL，在画廊的应用程序来显示特定文件夹的图片/视频列表。   - 有一些意向性的行动，以显示所选图像画廊打开时???   - 有没有什么办法来确定图像的特定文件夹**我想要的画廊，以显示我的文件夹只有图像/视频（并且没有其他系统文件夹）

I need to use the buil-in gallery app to SHOW a list of images/videos in a specific folder. - There is some Intent action to SHOW the selected image when the gallery is opened??? - Is there any way to determine a specific folder of images?**I want the gallery to show only the images/videos in my folder (and no other system folders).

推荐答案

您只需要在你的活动来实现MediaScannerConnectionClient，之后你必须给该文件夹的名称里面的文件之一的确切路径这里SCAN_PATH它将扫描所有包含该文件夹中的文件并打开它内建的画廊。所以，只要给的名字，你的文件夹，你会得到里面包括视频中的所有文件。如果你想打开的映像更改 FILE_TYPE =图像/ *

You just need to implement MediaScannerConnectionClient in your activity and after that you have to give the exact path of one of the file inside that folder name here as SCAN_PATH and it will scan all the files containing in that folder and open it inside built in gallery. So just give the name of you folder and you will get all the files inside including video. If you want to open only images change FILE_TYPE="image/*"

public class sdActivity extends Activity implements MediaScannerConnectionClient{
    public String[] allFiles;
private String SCAN_PATH ;
private static final String FILE_TYPE = "*/*";

private MediaScannerConnection conn;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    File folder = new File("/sdcard/youfoldername/");
    allFiles = folder.list();
 //   uriAllFiles= new Uri[allFiles.length];
    for(int i=0;i<allFiles.length;i++)
    {
        Log.d("all file path"+i, allFiles[i]+allFiles.length);
    }
  //  Uri uri= Uri.fromFile(new File(Environment.getExternalStorageDirectory().toString()+"/yourfoldername/"+allFiles[0]));
    SCAN_PATH=Environment.getExternalStorageDirectory().toString()+"/yourfoldername/"+allFiles[0];
    Log.d("SCAN PATH", "Scan Path " + SCAN_PATH);
    Button scanBtn = (Button)findViewById(R.id.scanBtn);
    scanBtn.setOnClickListener(new OnClickListener(){
    @Override
    public void onClick(View v) {
        startScan();
    }});
    }
    private void startScan()
    {
    Log.d("Connected","success"+conn);
    if(conn!=null)
    {
    conn.disconnect();
    }
    conn = new MediaScannerConnection(this,this);
    conn.connect();
    }
@Override
public void onMediaScannerConnected() {
    Log.d("onMediaScannerConnected","success"+conn);
    conn.scanFile(SCAN_PATH, FILE_TYPE);    
}
@Override
public void onScanCompleted(String path, Uri uri) {
    try {
        Log.d("onScanCompleted",uri + "success"+conn);
        if (uri != null) 
        {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(uri);
        startActivity(intent);
        }
        } finally 
        {
        conn.disconnect();
        conn = null;
        }
       }
}

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