我正在尝试创建文本文件并共享(通过蓝牙,电子邮件发送..)
File file = null;
try {
file = createFile2(json);
} catch (IOException e) {
e.printStackTrace();
}
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, file);
shareIntent.setType(getString(R.string.share_contact_type_intent));
这是createFile2()的乐趣:
public File createFile2(String text) throws IOException {
File file = new
File(getFilesDir() + File.separator + "MyFile.txt");
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(file));
bufferedWriter.write(text);
bufferedWriter.close();
return file;
}
Logcat:
Bundle﹕ Key android.intent.extra.STREAM expected Parcelable but value was a java.io.File. The default value <null> was returned.
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:1212)
at android.content.Intent.getParcelableExtra(Intent.java:4652)
at android.content.Intent.migrateExtraStreamToClipData(Intent.java:7235)
at android.content.Intent.migrateExtraStreamToClipData(Intent.java:7219)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
at android.app.Activity.startActivityForResult(Activity.java:3424)
at android.app.Activity.startActivityForResult(Activity.java:3385)
答案 0 :(得分:5)
为EXTRA_STREAM
意图填写ACTION_SEND
时,您必须为资源提供Uri
,而不是File
对象本身。
至于异常:虽然通常你可以将File
对象作为Intent
的扩展数据的一部分(因为它实现了Serializable
),接收方需要Parcelable
的{{1}}个实例,EXTRA_STREAM
不是。