android不同APP中的activity的传值

当前传递的Activity的值
SharedPreferences signature = getSharedPreferences("signature", MODE_WORLD_READABLE|MODE_WORLD_WRITEABLE); signature.edit().putString("uri","视频url").apply();

接收传过来的Activity的值:

String uri=null;
//根据包名获取另一个应用的Context对象
try {
 Context packageContext = createPackageContext("tv.zbm.live",CONTEXT_INCLUDE_CODE|Context.CONTEXT_IGNORE_SECURITY);
 SharedPreferences signature = packageContext.getSharedPreferences("signature", MODE_WORLD_READABLE|MODE_WORLD_WRITEABLE);
  uri = signature.getString("uri", "");
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}