Question

我在操作栏中将搜索视图作为选项菜单

在onCreateOptionsMenu方法中，我得到了如下搜索视图

inflater.inflate(R.menu.main, menu);

     SearchView searchView = (SearchView) menu.findItem(R.id.serach).getActionView();

当我尝试设置setOnQueryTextListener时，它会给我空指针异常。

我的代码如下

mSearchView.setOnQueryTextListener(new OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String arg0) {

            return true;
        }

        @Override
        public boolean onQueryTextChange(String arg0) {

            return false;
        }
    });

当我删除监听器时它工作正常。有人能说出我做错了什么。

logcat log

    02-11 20:04:15.574: E/AndroidRuntime(27028): FATAL EXCEPTION: main
02-11 20:04:15.574: E/AndroidRuntime(27028): java.lang.NullPointerException
02-11 20:04:15.574: E/AndroidRuntime(27028):    at com.example.test.PM_Fragment.onCreateOptionsMenu(PM_Fragment.java:61)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.app.Fragment.performCreateOptionsMenu(Fragment.java:1865)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.app.FragmentManagerImpl.dispatchCreateOptionsMenu(FragmentManager.java:1919)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.app.Activity.onCreatePanelMenu(Activity.java:2552)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:479)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:845)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:273)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.os.Handler.handleCallback(Handler.java:725)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.os.Handler.dispatchMessage(Handler.java:92)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.os.Looper.loop(Looper.java:158)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at android.app.ActivityThread.main(ActivityThread.java:5751)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at java.lang.reflect.Method.invokeNative(Native Method)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at java.lang.reflect.Method.invoke(Method.java:511)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1083)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:850)
02-11 20:04:15.574: E/AndroidRuntime(27028):    at dalvik.system.NativeStart.main(Native Method)

Answer 1

我怎么会这么愚蠢。

我在searchView获得了搜索视图，我正在设置mSearchView的监听器。这完全是我的错误

为SearchView设置setOnQueryTextListener会给出空指针异常

1 个答案: