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我usging片段，並在活動中我想顯示/隱藏一個RelativeLayout的（最後：XK1）當我觸摸的EditText：Android的碎片不能setvisibility RelativeLayout的
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/xMLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/linearborder" >
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/xsubLayout"
android:keepScreenOn="true"
android:orientation="vertical"
android:layout_below="@+id/RL_boutton"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<EditText
android:id="@+id/editText_code_d"
android:layout_width="304dp"
android:layout_height="wrap_content"
android:layout_below="@+id/RL_boutton"
android:layout_centerHorizontal="true"
android:background="@drawable/plaquehaut"
android:ems="4"
android:gravity="center_vertical|center_horizontal"
android:inputType="number"
android:maxLength="4"
android:text="123"
android:textSize="80sp"
android:focusableInTouchMode="true"
/>
<EditText
android:id="@+id/editText_code_m"
android:layout_width="304dp"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText_code_d"
android:layout_below="@+id/editText_code_d"
android:background="@drawable/plaquebas"
android:ems="4"
android:gravity="center_vertical|center_horizontal"
android:inputType="number"
android:maxLength="4"
android:text="1337"
android:textSize="80sp"
/>
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/xK1"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="gone">
<include android:id="@+id/xKeyBoard"
layout="@layout/keyboard">
</include>
</RelativeLayout>
</RelativeLayout>
下面的代碼：
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.fragment_rsslist_overview,container, false);
try {
mLayout = (RelativeLayout) view.findViewById(R.id.xK1);
mKLayout = (RelativeLayout) view.findViewById(R.id.xKeyBoard);
} catch (Exception e) {
Log.w(getClass().getName(), e.toString());
}
mEt = (EditText) view.findViewById(R.id.editText_code_d);
mEt.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
edittext_onClick(v);
}
});
mEt1 = (EditText) view.findViewById(R.id.editText_code_m);
mEt1.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
edittext_onClick(v);
}
});
mEt.setOnTouchListener(this);
return view;
}
public boolean onTouch(View v, MotionEvent event) {
enableKeyboard();
return true;
}
private void enableKeyboard() {
mLayout.setVisibility(RelativeLayout.VISIBLE);
mKLayout.setVisibility(RelativeLayout.VISIBLE);
}
程序在此處運行時停止活動： mLayout.setVisibility（RelativeLayout.VISIBLE）;
我該如何解決這個問題？
thx，提前。
的logcat：
02-18 12:06:27.364: I/dalvikvm(1044): Wrote stack traces to '/data/anr/traces.txt'
02-18 12:06:28.963: D/AndroidRuntime(1044): Shutting down VM
02-18 12:06:28.963: W/dalvikvm(1044): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
02-18 12:06:29.104: E/AndroidRuntime(1044): FATAL EXCEPTION: main
02-18 12:06:29.104: E/AndroidRuntime(1044): java.lang.NullPointerException
02-18 12:06:29.104: E/AndroidRuntime(1044): at fr.app.tutorielfragment.MyListFragment.enableKeyboard(MyListFragment.java:363)
02-18 12:06:29.104: E/AndroidRuntime(1044): at fr.app.tutorielfragment.MyListFragment.onTouch(MyListFragment.java:240)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.View.dispatchTouchEvent(View.java:5536)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1684)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1684)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1684)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1684)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1684)
02-18 12:06:29.104: E/AndroidRuntime(1044): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1912)
02-18 12:06:29.104: E/AndroidRuntime(1044): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1371)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.app.Activity.dispatchTouchEvent(Activity.java:2364)
02-18 12:06:29.104: E/AndroidRuntime(1044): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1860)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.View.dispatchPointerEvent(View.java:5721)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:2890)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2466)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewRootImpl.processInputEvents(ViewRootImpl.java:845)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2475)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.os.Handler.dispatchMessage(Handler.java:99)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.os.Looper.loop(Looper.java:137)
02-18 12:06:29.104: E/AndroidRuntime(1044): at android.app.ActivityThread.main(ActivityThread.java:4424)
02-18 12:06:29.104: E/AndroidRuntime(1044): at java.lang.reflect.Method.invokeNative(Native Method)
02-18 12:06:29.104: E/AndroidRuntime(1044): at java.lang.reflect.Method.invoke(Method.java:511)
02-18 12:06:29.104: E/AndroidRuntime(1044): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-18 12:06:29.104: E/AndroidRuntime(1044): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-18 12:06:29.104: E/AndroidRuntime(1044): at dalvik.system.NativeStart.main(Native Method)
02-18 12:06:29.693: I/dalvikvm(1044): threadid=3: reacting to signal 3
02-18 12:06:29.726: I/dalvikvm(1044): Wrote stack traces to '/data/anr/traces.txt'
02-18 12:06:34.654: I/Process(1044): Sending signal. PID: 1044 SIG: 9
發佈您的logcat。 – 2013-02-18 13:22:10
爲什麼你在findViewById的周圍嘗試一下，你不應該在那裏遇到問題？ – serenskye 2013-02-18 13:27:16