您只需要在您的活动中实施MediaScannerConnectionClient,然后您必须将该文件夹名称中的文件名称之一作为SCAN_PATH的确切路径,并且它将扫描该文件夹中包含的所有文件并将其打开建在画廊。所以只需给出你的文件夹的名称,你就会得到包括视频在内的所有文件。如果你想打开仅适用于图像改变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;
}
}
}
完整的解决方案已经在这里讨论 - http://stackoverflow.com/questions/2169649/open-an-image-in-androids-built-in-gallery-app - 编程/ 2636538#2636538 – 2011-05-20 15:45:49
@peter_budo:首先请看两个问题之间的区别,我搜索了很多,这个问题是有效的因为你建议上面的网址不是他要求的答案... – PiyushMishra 2011-11-20 13:19:24
@PiyushMishra original海报甚至懒得回来解释他想要的东西,所以你怎么确定海报想要什么。你是否介意读者?在你身边碰到了6个月的帖子,没有有效的信息 – 2011-11-21 20:44:07