在 Android N 中通过蓝牙 opp 共享文件
share file over bluetooth opp in Android N
我正在尝试通过蓝牙共享文件。我尝试了以下两种方法将文件名传递给 ACTION_SEND
意图。 share
activity 弹出,当我触摸连接的蓝牙设备时,我得到一个祝酒词 Bluetooth share: File Unknown file not sent
。两种方法都失败了。
public void pushFileOverOpp(String filename) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.setPackage("com.android.bluetooth");
intent.setType("audio/mp3");
File f = new File(Environment.getExternalStorageDirectory(), "images");
File sample = new File(f, "sample.mp3");
Uri u = Uri.parse(sample.toString());
intent.putExtra(Intent.EXTRA_STREAM, u);
mContext.startActivity(intent);
}
错误,日志-
OppService: URI : /storage/emulated/0/images/sample.mp3
OppService: HINT : null
OppService: FILENAME: null
OppService: MIMETYPE: audio/mp3
File f = new File(mContext.getFilesDir(), "images");
File sample = new File(f, "sample.mp3");
Uri u = FileProvider.getUriForFile(mContext,
BuildConfig.APPLICATION_ID + ".provider", sample);
intent.putExtra(Intent.EXTRA_STREAM, u);
错误,日志-
OppService: URI : content://com.example.com.test.provider/tester/images/sample.mp3
OppService: HINT : null
OppService: FILENAME: null
我查看了android源代码,当文件名为空时出现这个错误。日志还说文件名是空的。但我无法弄清楚确切的原因。有人可以帮帮我吗,我的代码有什么问题。
请参考此代码,它可以工作并使用 createChooser 方法共享文件。
ArrayList<Uri> arrayList2 = new ArrayList<>();
String MEDIA_PATH = new String(Environment.getExternalStorageDirectory() +
"/NewCallLogs/audio.mp3");
File files = new File(MEDIA_PATH);
Uri u = Uri.fromFile(files);
arrayList2.add(u);
Intent share = new Intent(android.content.Intent.ACTION_SEND_MULTIPLE);
share.setData(Uri.parse("mailto:"));
share.setType("audio/mpeg");
share.putExtra(android.content.Intent.EXTRA_STREAM, arrayList2);
try {
startActivity(Intent.createChooser(share, "Share..."));
// getActivity().finish();
Log.i("Finished sharing.", "");
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(getActivity(), "nothing shared.", Toast.LENGTH_SHORT).show();
}
仅在蓝牙中共享文件
ArrayList<Uri> arrayList2 = new ArrayList<>();
String MEDIA_PATH = new String(Environment.getExternalStorageDirectory() +
"/NewCallLogs/audio.mp3" );
File files = new File(MEDIA_PATH);
Uri u = Uri.fromFile(files);
arrayList2.add(u);
Intent share = new Intent(android.content.Intent.ACTION_SEND);
share.setData(Uri.parse("mailto:"));
share.setType("audio/mpeg");
share.setPackage("com.android.bluetooth");
share.putExtra(android.content.Intent.EXTRA_STREAM, arrayList2);
startActivity(share);
经过一番研究,我明白了这个问题。有两个问题-
xml tag for external storage(/sdcard/) directory was wrong in xml file.
我改成如下。
<root-path
name="root"
path="/" />
URI permission was not granted
mContext.grantUriPermission("com.android.bluetooth", u,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
修改以上代码后,文件共享就可以了!
完整的工作代码-
public boolean pushFileOverOpp(String filename) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.setType("*/*"); // supports all mime types
intent.setPackage("com.android.bluetooth"); //bluetooth package name, default opp
File folder = new File(Environment.getExternalStorageDirectory(), "images");
File file = new File(folder, filename);
if (!file.exists()) {
Logger.e("No such file " + filename + " exists!");
return false;
}
Uri u = FileProvider.getUriForFile(mContext, mContext.getPackageName() + ".provider", file);
intent.putExtra(Intent.EXTRA_STREAM, u);
mContext.grantUriPermission("com.android.bluetooth", u,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
Logger.d("Sharing file over bluetooth " + folder.toString());
mContext.startActivity(intent);
return true;
}
谢谢。
我正在尝试通过蓝牙共享文件。我尝试了以下两种方法将文件名传递给 ACTION_SEND
意图。 share
activity 弹出,当我触摸连接的蓝牙设备时,我得到一个祝酒词 Bluetooth share: File Unknown file not sent
。两种方法都失败了。
public void pushFileOverOpp(String filename) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.setPackage("com.android.bluetooth");
intent.setType("audio/mp3");
File f = new File(Environment.getExternalStorageDirectory(), "images");
File sample = new File(f, "sample.mp3");
Uri u = Uri.parse(sample.toString());
intent.putExtra(Intent.EXTRA_STREAM, u);
mContext.startActivity(intent);
}
错误,日志-
OppService: URI : /storage/emulated/0/images/sample.mp3 OppService: HINT : null OppService: FILENAME: null OppService: MIMETYPE: audio/mp3
File f = new File(mContext.getFilesDir(), "images");
File sample = new File(f, "sample.mp3");
Uri u = FileProvider.getUriForFile(mContext,
BuildConfig.APPLICATION_ID + ".provider", sample);
intent.putExtra(Intent.EXTRA_STREAM, u);
错误,日志-
OppService: URI : content://com.example.com.test.provider/tester/images/sample.mp3 OppService: HINT : null OppService: FILENAME: null
我查看了android源代码,当文件名为空时出现这个错误。日志还说文件名是空的。但我无法弄清楚确切的原因。有人可以帮帮我吗,我的代码有什么问题。
请参考此代码,它可以工作并使用 createChooser 方法共享文件。
ArrayList<Uri> arrayList2 = new ArrayList<>();
String MEDIA_PATH = new String(Environment.getExternalStorageDirectory() +
"/NewCallLogs/audio.mp3");
File files = new File(MEDIA_PATH);
Uri u = Uri.fromFile(files);
arrayList2.add(u);
Intent share = new Intent(android.content.Intent.ACTION_SEND_MULTIPLE);
share.setData(Uri.parse("mailto:"));
share.setType("audio/mpeg");
share.putExtra(android.content.Intent.EXTRA_STREAM, arrayList2);
try {
startActivity(Intent.createChooser(share, "Share..."));
// getActivity().finish();
Log.i("Finished sharing.", "");
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(getActivity(), "nothing shared.", Toast.LENGTH_SHORT).show();
}
仅在蓝牙中共享文件
ArrayList<Uri> arrayList2 = new ArrayList<>();
String MEDIA_PATH = new String(Environment.getExternalStorageDirectory() +
"/NewCallLogs/audio.mp3" );
File files = new File(MEDIA_PATH);
Uri u = Uri.fromFile(files);
arrayList2.add(u);
Intent share = new Intent(android.content.Intent.ACTION_SEND);
share.setData(Uri.parse("mailto:"));
share.setType("audio/mpeg");
share.setPackage("com.android.bluetooth");
share.putExtra(android.content.Intent.EXTRA_STREAM, arrayList2);
startActivity(share);
经过一番研究,我明白了这个问题。有两个问题-
xml tag for external storage(/sdcard/) directory was wrong in xml file.
我改成如下。
<root-path
name="root"
path="/" />
URI permission was not granted
mContext.grantUriPermission("com.android.bluetooth", u,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
修改以上代码后,文件共享就可以了!
完整的工作代码-
public boolean pushFileOverOpp(String filename) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.setType("*/*"); // supports all mime types
intent.setPackage("com.android.bluetooth"); //bluetooth package name, default opp
File folder = new File(Environment.getExternalStorageDirectory(), "images");
File file = new File(folder, filename);
if (!file.exists()) {
Logger.e("No such file " + filename + " exists!");
return false;
}
Uri u = FileProvider.getUriForFile(mContext, mContext.getPackageName() + ".provider", file);
intent.putExtra(Intent.EXTRA_STREAM, u);
mContext.grantUriPermission("com.android.bluetooth", u,
Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
Logger.d("Sharing file over bluetooth " + folder.toString());
mContext.startActivity(intent);
return true;
}
谢谢。