Android:无法使用视频调用图库

Question

我正在尝试用加载它的视频调用android库.此方法适用于意图,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI但它不能正常工作,并返回以下异常.有人可以把我赶出去吗

08-09 17:12:26.992: ERROR/AndroidRuntime(878): java.lang.RuntimeException: Unable to start activity ComponentInfo{a.b/a.b.SDCardVideoActivity}: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.PICK dat=content://media/external/video/media cmp=com.google.android.music/com.android.music.VideoBrowserActivity } from ProcessRecord{4052da08 878:a.b/10053} (pid=878, uid=10053) requires null




08-09 17:12:26.992: ERROR/AndroidRuntime(878): Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.PICK dat=content://media/external/video/media cmp=com.google.android.music/com.android.music.VideoBrowserActivity } from ProcessRecord{4052da08 878:a.b/10053} (pid=878, uid=10053) requires null

我的代码如下

public class SDCardVideoActivity extends Activity {
    final int REQ_CODE_PICK_VIDEO = 1;
    String outputfilepath;
    SQLiteDatabase db;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.header);
        Intent i = new Intent(Intent.ACTION_PICK,
                android.provider.MediaStore.Video.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(i, REQ_CODE_PICK_VIDEO);
    }

}

Answer 1

我使用以下代码从我的活动中调用Gallery Application.

// contentId will have the video content id as given by Content Resolver
// In this nparticular application, contentId is retrieved from ListActivity with custom adapter

Uri contentUri = ContentUris.withAppendedId(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, contentId);

try {
    Intent intent = new Intent(Intent.ACTION_VIEW, contentUri);
    startActivity(intent);
} 
catch (ActivityNotFoundException e) {
    Toast.makeText(this, "Not Supported", Toast.LENGTH_SHORT).show();
}

编辑1

要调用Gallery浏览器,请使用以下代码

someMethod() {
   Intent intent = new Intent(Intent.ACTION_PICK, null);
   intent.setType("video/*");
   startActivityForResult(intent, 1);
}

要调用视频播放器,请使用以下代码

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if ((requestCode == 1) && (resultCode == RESULT_OK) && (data != null)) {

        Log.i("---------------------", data.getData().getEncodedPath());
        mIntentFromGallery = data;

        Intent intent = new Intent(Intent.ACTION_MAIN, null);
        intent.setType("video/*");
        intent.setData(data.getData());
        try
        {
            startActivity(intent);
        }
        catch(Exception e)
        {
        }


    } else {
        setResult(RESULT_CANCELED);
        finish();
    }
}

词shash