小编ald*_*kur的帖子

我有一个带有Fragment布局的主Activity.抽屉有3个选项:

Fragment[1], Fragment[2], Fragment[3].

Inside Fragment [2]和Fragment [3]是一个按钮.这个按钮打开其他片段.片段[4].

我想片段[4]没有抽屉,但有一个后退按钮.

这是片段[2]中的onClick代码

Fragment fragment = new InstalacionesEncontradasFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("key", this.instalacionesConCategorias);
fragment.setArguments(bundle);
FragmentManager fragmentManager = getFragmentManager();

FragmentTransaction mFragmentTransaction = fragmentManager.beginTransaction();
mFragmentTransaction.addToBackStack(null);
mFragmentTransaction.replace(R.id.main_frame_container, fragment, "ACTIVIDADES").commit();

并在片段[4]

onCreate方法:

getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);

但是这个解决方案不起作用.

如何禁用抽屉？我应该在哪里实现后退按钮？在片段[2]或片段[3]？

我具有“自定义”，AlertDialog并且我想在用户单击时关闭button。

这是我的代码：

    Button btn = (Button) dialoglayout.findViewById(R.id.custom_alert_dialog_horarios_btn_aceptar);

    btn.setOnClickListener(new Button.OnClickListener() {

           @Override
           public void onClick(View arg0) {
            // TODO Auto-generated method stub
            //I want dismiss alertDialog

           }});


    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    builder.setView(dialoglayout);
    builder.show()

我收到此错误：

04-17 09:35:10.227: E/AndroidRuntime(9377): java.lang.RuntimeException: Error receiving broadcast Intent { act=com.aldakur.instalacionesdep.services.action.FIN flg=0x10 } in com.aldakur.instalacionesdep.info.RssAvisosFragment$ProgressReceiver@42721b68
04-17 09:35:10.227: E/AndroidRuntime(9377):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:776)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at android.os.Handler.handleCallback(Handler.java:733)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at android.os.Handler.dispatchMessage(Handler.java:95)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at android.os.Looper.loop(Looper.java:136)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at android.app.ActivityThread.main(ActivityThread.java:5146)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at java.lang.reflect.Method.invokeNative(Native Method)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at java.lang.reflect.Method.invoke(Method.java:515)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:732)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:566)
04-17 09:35:10.227: E/AndroidRuntime(9377):     at dalvik.system.NativeStart.main(Native Method)
04-17 09:35:10.227: E/AndroidRuntime(9377): Caused by: java.lang.NullPointerException
04-17 09:35:10.227: E/AndroidRuntime(9377):     at com.aldakur.instalacionesdep.info.RssAvisosFragment$ProgressReceiver.onReceive(RssAvisosFragment.java:123)
04-17 09:35:10.227: …