Java 非常奇怪的班级混乱
我有一个操作菜单,我试图在点击图标后启动另一个活动,但这会导致错误恐慌。实际上,它似乎找到了一条通往类的错误路径。这就是我的意思。代码如下:Java 非常奇怪的班级混乱,java,android,android-activity,android-actionbar,Java,Android,Android Activity,Android Actionbar,我有一个操作菜单,我试图在点击图标后启动另一个活动,但这会导致错误恐慌。实际上,它似乎找到了一条通往类的错误路径。这就是我的意思。代码如下: @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_settings) { return true; }
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
if (id == R.id.mapIcon) {
Intent displayTheMap = new Intent(this, TheMap.class);
startActivity(displayTheMap);
return true;
}
return super.onOptionsItemSelected(item);
}
但它的回报是:
04-18 06:19:16.201: E/AndroidRuntime(2079): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.gs.maps/com.gs.maps.TheMap}: java.lang.IllegalArgumentException: No view found for id 0x7f06003f (com.gs.maps:id/container) for fragment PlaceholderFragment{b3d8a760 #0 id=0x7f06003f}
为什么会这样?它应该找到com.gs.maps.TheMap
而不是com.gs.maps/com.gs.maps.TheMap
为什么它得到了一条完全错误的路径?我错过了什么?我知道这只是一小部分,但目前我无法找到解决方案
完整logcat异常:
04-18 06:19:16.201: E/AndroidRuntime(2079): FATAL EXCEPTION: main
04-18 06:19:16.201: E/AndroidRuntime(2079): Process: com.gs.maps, PID: 2079
04-18 06:19:16.201: E/AndroidRuntime(2079): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.gs.maps/com.gs.maps.TheMap}: java.lang.IllegalArgumentException: No view found for id 0x7f06003f (com.gs.maps:id/container) for fragment PlaceholderFragment{b3d8a760 #0 id=0x7f06003f}
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.ActivityThread.access$800(ActivityThread.java:135)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.os.Handler.dispatchMessage(Handler.java:102)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.os.Looper.loop(Looper.java:136)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.ActivityThread.main(ActivityThread.java:5017)
04-18 06:19:16.201: E/AndroidRuntime(2079): at java.lang.reflect.Method.invokeNative(Native Method)
04-18 06:19:16.201: E/AndroidRuntime(2079): at java.lang.reflect.Method.invoke(Method.java:515)
04-18 06:19:16.201: E/AndroidRuntime(2079): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-18 06:19:16.201: E/AndroidRuntime(2079): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-18 06:19:16.201: E/AndroidRuntime(2079): at dalvik.system.NativeStart.main(Native Method)
04-18 06:19:16.201: E/AndroidRuntime(2079): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f06003f (com.gs.maps:id/container) for fragment PlaceholderFragment{b3d8a760 #0 id=0x7f06003f}
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:930)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.Activity.performStart(Activity.java:5241)
04-18 06:19:16.201: E/AndroidRuntime(2079): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2168)
04-18 06:19:16.201: E/AndroidRuntime(2079): ... 11 more
舱单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.gs.maps"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="xxxx" />
<activity
android:name="com.gs.maps.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.gs.maps.TheMap"
android:label="@string/title_activity_the_gay_map" >
</activity>
</application>
</manifest>
我曾经遇到过类似的问题,我还没有真正深入研究过您的代码,但尝试将其替换为(您正在声明新意图的地方):
看看这是否不起作用。你的应用程序中的“TheMap”是活动吗?如果是,你是否在清单中声明了它?你的错误表明你试图加载到
容器中的占位符片段
丢失。请发布更多代码和完整日志error@amj这里是
@chility我要的是java文件代码不是清单文件。请确保您的活动\u main
布局包含框架布局
和容器
id。
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater actionMenue = getMenuInflater();
actionMenue.inflate(R.menu.main_activity_bar, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
if (id == R.id.mapIcon) {
Intent displayTheMap = new Intent(this, TheMap.class);
startActivity(displayTheMap);
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
}
Intent displayTheMap = new Intent(NAMEOFTHECLASSYOURIN.this, TheMap.class);