我有一个使用
的android应用final JSONArray jsonArray1 = jsonArray;
JSONObject export = jsonArray1.getJSONObject(index);
获取JSON对象,然后使用共享意图:
Intent ShareIntent = new Intent(Intent.ACTION_SEND);
ShareIntent.setType("text/plain");
ShareIntent.putExtra(Intent.EXTRA_SUBJECT, "THE SUBJECT");
ShareIntent.putExtra(Intent.EXTRA_TEXT, "THE CONTENT IS " + export);
startActivity(Intent.createChooser(ShareIntent, "Send the object via"));
并且工作正常,但是,它以纯文本形式共享JSON对象。
我知道为什么会这么做。
如何更改它,以便将JSON对象作为文件preferably a JSON file
共享,例如将其附加到电子邮件。
预先感谢
答案 0 :(得分:1)
将以下权限添加到清单
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
....
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
.....
</application>
在provider-paths.xml
下创建res/xml
文件,并将以下代码放入其中:
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<files-path name="my_file_path" path="." />
</paths>
您可以创建一个文件,然后将jsonobject写入该文件。
StringBuilder stringBuilder = new StringBuilder();
File tempFolder = new File(MainActivity.this.getFilesDir(), "temp");
if (!tempFolder.exists()) {
tempFolder.mkdir();
}
JSONObject export = new JSONObject();
try {
export.put("name", "my-name");
export.put("age", "20");
} catch (JSONException e) {
e.printStackTrace();
}
File file = null;
try {
Writer wrt = null;
file = new File(tempFolder, "myJsonFile.json");
wrt = new BufferedWriter(new FileWriter(file));
wrt.write(export.toString());
wrt.close();
} catch (Exception e) {
e.printStackTrace();
}
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("file/text/plain");
Uri fileUri = FileProvider.getUriForFile(MainActivity.this, BuildConfig.APPLICATION_ID + ".provider",
file);
shareIntent.putExtra(Intent.EXTRA_TEXT, "THE CONTENT IS " + export.toString());
shareIntent.putExtra(Intent.EXTRA_STREAM, fileUri);
shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
shareIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
startActivity(Intent.createChooser(shareIntent, "Send the object via"));
try {
File f = new File(MainActivity.this.getFilesDir() + "/temp/myJsonFile.json");
InputStream inputStream = new DataInputStream(new FileInputStream(f));
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String str;
str = bufferedReader.readLine();
stringBuilder.append(str);
tvAccountName.setText(stringBuilder.toString());
} catch (IOException e) {
e.printStackTrace();
}
//then delete the file or you can delete the tempFolder instead;
if(file!=null)file.delete();
意图在我的情况下是开放的,并且正在我的应用程序中共享,例如Whatsapp和电报。稍微说明一下,Android不再允许将file://
附加到Intents check this上。因此,您需要使用文件提供程序来实现此目标,如其website中所述。