【发布时间】：2017-06-23 19:55:56
【问题描述】：
我想分享一个 mp3 文件到 whatsapp。 我在 Stack Overflow 上找到了this question，但接受的答案对我不起作用。如果我尝试与 whatsapp 共享它，它会显示“共享失败，请重试”：
File dest = Environment.getExternalStorageDirectory();
InputStream in = getResources().openRawResource(R.raw.sound);
try
{
OutputStream out = new FileOutputStream(new File(dest, "sound.mp3"));
byte[] buf = new byte[1024];
int len;
while ( (len = in.read(buf, 0, buf.length)) != -1)
{
out.write(buf, 0, len);
}
in.close();
out.close();
}
catch (Exception e) {
e.printStackTrace();}
Intent share = new Intent(Intent.ACTION_SEND);
share.putExtra(Intent.EXTRA_STREAM, Uri.parse(Environment.getExternalStorageDirectory().toString() + "/sound.mp3"));
share.setType("audio/mp3");
startActivity(Intent.createChooser(share, "Shared"));
这是完整的 MainActivity.java：
package com.example.aaron.sharetest;
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class MainActivity extends AppCompatActivity {
Button shareBtn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final File FILES_PATH = new File(Environment.getExternalStorageDirectory(), "Android/data/com.example.aaron.sharetest/files");
File sharefile= new File(FILES_PATH, "sound.mp3") ;
putExtra(Intent.EXTRA_STREAM, Uri.fromFile(sharefile));
shareBtn = (Button)findViewById(R.id.shareBtn);
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
1);
shareBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (Environment.MEDIA_MOUNTED.equals(
Environment.getExternalStorageState())) {
if (!FILES_PATH.mkdirs()) {
Log.w("error", "Could not create " + FILES_PATH);
}
} else {
Toast.makeText(MainActivity.this, "error", Toast.LENGTH_LONG).show();
finish();
}
File dest = Environment.getExternalStorageDirectory();
InputStream in = getResources().openRawResource(R.raw.bibikurz);
try
{
OutputStream out = new FileOutputStream(new File(dest, "sound.mp3"));
byte[] buf = new byte[1024];
int len;
while ( (len = in.read(buf, 0, buf.length)) != -1)
{
out.write(buf, 0, len);
}
in.close();
out.close();
}
catch (Exception e) {
e.printStackTrace();
}
Intent share = new Intent(Intent.ACTION_SEND);
share.putExtra(Intent.EXTRA_STREAM, Uri.parse(Environment.getExternalStorageDirectory().toString() + "/sound.mp3"));
share.setType("audio/mp3");
startActivity(Intent.createChooser(share, "Shared"));
}
});
}
}
当然，我在 Manifest 中写了这一行：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
如何将 mp3 文件分享到 whatsapp 等？
我尝试了这么多公认的答案，但没有一个对我有用。
这是我在 LogCat 中得到的：
06-23 02:41:17.589 23924-23924/? W/Bundle: Key android.intent.extra.STREAM expected ArrayList but value was a android.net.Uri$StringUri. The default value <null> was returned.
06-23 02:41:17.659 23924-23924/? W/Bundle: Attempt to cast generated internal exception:
java.lang.ClassCastException: android.net.Uri$StringUri cannot be cast to java.util.ArrayList
at android.os.Bundle.getParcelableArrayList(Bundle.java:838)
at android.content.Intent.getParcelableArrayListExtra(Intent.java:5481)
at com.whatsapp.ContactPicker.k(ContactPicker.java:623)
at com.whatsapp.ContactPicker.onCreate(ContactPicker.java:338)
at android.app.Activity.performCreate(Activity.java:6367)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2404)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2511)
at android.app.ActivityThread.access$900(ActivityThread.java:165)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1375)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:5621)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:684)
【问题讨论】：
标签： java android mp3 share whatsapp