小编Bho*_*iya的帖子

在我的ddms的PC文件管理器工作正常,它显示来自设备的所有文件夹,但对于正在使用Lollipop或以下版本的模拟器,但对于Nougat版本文件管理器没有显示任何数据,它对于Nougat模拟器始终为空.

Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1588)
  at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:330)
  at android.support.v4.app.FragmentActivity.onResume(FragmentActivity.java:441)
  at com.app.rare10.activities.ViewAllMemberActivity.onResume(ViewAllMemberActivity.java:192)
  at com.app.rare10.activities.ViewAllMemberActivity$1.onReceive(ViewAllMemberActivity.java:74)
  at android.support.v4.content.LocalBroadcastManager.executePendingBroadcasts(LocalBroadcastManager.java:297)
  at android.support.v4.content.LocalBroadcastManager.access$000(LocalBroadcastManager.java:46)
  at android.support.v4.content.LocalBroadcastManager$1.handleMessage(LocalBroadcastManager.java:116)
  at android.os.Handler.dispatchMessage(Handler.java:102)
  at android.os.Looper.loop(Looper.java:135)
  at android.app.ActivityThread.main(ActivityThread.java:5254)
  at java.lang.reflect.Method.invoke(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:372)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698

我在我的项目中使用了推送通知，每当我点击我的通知时，我都会收到上面的这个错误。帮助？

我正在使用HA代理版本1.6.6来负载均衡Rabbitmq服务器，它工作正常，但我想使用脚本在ubuntu中的HA代理后端动态添加服务器。谁能告诉我我该怎么做？

我已经将联系人添加到我的通讯录中，该通讯录具有如下多个号码。

我想使用ContactsContract内容uri 提取“用户”的所有3个数字 。通过使用以下代码，我只有一个联系人。

 Cursor cursorAddressBook = mContentResolver.query(
            ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);

    if (cursorAddressBook != null) {
        while (cursorAddressBook.moveToNext()) {

            String dataName = cursorAddressBook.getString(cursorAddressBook.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
            String dataNumber = cursorAddressBook.getString(cursorAddressBook.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            int dataType = cursorAddressBook.getInt(cursorAddressBook.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA2));
            String contactId = cursorAddressBook.getString(cursorAddressBook.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));

            Log.e("last updat Name last", dataName);
            Log.e("last updated No last", dataNumber);
            Log.e("last updated Type last", dataType);


        }
        cursorAddressBook.close();
    }

我正在尝试为我集成了 facebook 登录的应用程序生成密钥哈希

对于 generationg keyhash，我根据 facecook 文档使用下面的代码

> C:\Program Files\Java\jdk1.8.0_111\bin> keytool -exportcert -alias androiddebugkey -keystore "C:\Users\Akash\.android \debug.keystore" |"C:\OpenSSL\bin\openssl" sha1 -binary | "C:\OpenSSL\bin\openssl" base64

但它向我显示了如下错误：

At line:1 char:97
+ ... ers\Akash\.android\debug.keystore" | "C:\OpenSSL\bin\openssl" sha1 -b ...
+                                          ~~~~~~~~~~~~~~~~~~~~~~~~
Expressions are only allowed as the first element of a pipeline.
At line:1 char:122
+ ... kash\.android\debug.keystore" | "C:\OpenSSL\bin\openssl" sha1 -binary ...
+                                                              ~~~~
Unexpected token 'sha1' in expression or statement.
At line:1 char:137
+ ... :\OpenSSL\bin\openssl" sha1 -binary | "C:\OpenSSL\bin\openssl" base64 …