Question

我试图通过这样做来共享缓存文件夹中的 .mp3 文件：

InputStream inputStream = getContentResolver().openInputStream(UriUtils.getResourceUri(audioToShare.getAudioPath(),this));
                File fileToShare = FileUtils.writeStreamToFile(this,audioToShare.getLabel(),inputStream);
                Intent intent = new Intent(Intent.ACTION_SEND).setType("audio/mpeg");
                intent.putExtra(Intent.EXTRA_STREAM,Uri.fromFile(fileToShare));
                startActivity(Intent.createChooser(intent, "Share to"));

但是当我选择一个联系人时，让我们说whatsapp，应用程序抛出了警告。

W/Bundle: Key android.intent.extra.STREAM expected Parcelable but value was a java.io.File.  The default value <null> was returned.
12-25 16:10:32.802 17021-17021/com.example.soundboard W/Bundle: Attempt to cast generated internal exception:
                                                                       java.lang.ClassCastException: java.io.File cannot be cast to android.os.Parcelable
                                                                           at android.os.Bundle.getParcelable(Bundle.java:894)
                                                                           at android.content.Intent.getParcelableExtra(Intent.java:7075)
                                                                           at android.content.Intent.migrateExtraStreamToClipData(Intent.java:9887)
                                                                           at android.content.Intent.migrateExtraStreamToClipData(Intent.java:9867)
                                                                           at android.app.Instrumentation.execStartActivity(Instrumentation.java:1608)
                                                                           at android.app.Activity.startActivityForResult(Activity.java:4472)
                                                                           at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
                                                                           at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:67)
                                                                           at android.app.Activity.startActivityForResult(Activity.java:4430)
                                                                           at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:720)
                                                                           at android.app.Activity.startActivity(Activity.java:4791)
                                                                           at android.app.Activity.startActivity(Activity.java:4759)
                                                                           at com.quartzodev.cirosoundboard.sound.SoundActivity.onActionItemClicked(SoundActivity.java:170)

方法 writeStreamToFile ，以便您可以看到我如何创建缓存文件

public static File writeStreamToFile(Context context, String fileName, InputStream input){

        try {
            File file = new File(context.getFilesDir(), fileName);
            OutputStream output = new FileOutputStream(file);
            try {
                byte[] buffer = new byte[4 * 1024]; // or other buffer size
                int read;

                while ((read = input.read(buffer)) != -1) {
                    output.write(buffer, 0, read);
                }

                output.flush();

                return file;
            } finally {
                output.close();

            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

我做错了什么？

Answer 1

原来我没有权限在 getFilesDir（）

中共享文件夹中的文件

刚刚更改为 getExternalCacheDir（），现在我可以通过Whatsapp和Gmail分享

密钥android.intent.extra.STREAM期望Parcelable但值是java.io.File。返回了默认值<null>

1 个答案: