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在我的項目中，我有一個位於MainActivity.java的導航抽屜。該抽屜中的每個項目都會啓動佔用整個屏幕空間的不同片段。其中一個片段具有需要啓動一個Activity的按鈕（此活動擴展了MainActivity.java--其原理背後是保持抽屜式導航器可用）。當我按下任何按鈕，在一個片段啓動另一個活動，我得到這個錯誤java.lang.IllegalArgumentException：沒有找到ID爲fragment的視圖NewLogFragment
java.lang.RuntimeException: Unable to start activity ComponentInfo{.AddWorkoutActivity}: java.lang.IllegalArgumentException:
No view found for id 0x7f0a0041 (id/contentFrame) for fragment NewLogFragment{529f3328 #0 id=0x7f0a0041}
這裏，NewLogFragment是一種嘗試推出新的活動片段。
基本上，我的項目的結構是這樣的： MainActivity：java->包含NavDrawer並啓動一個片段 - >然後這個片段啓動另一個活動，這會導致錯誤。
下面是我的一些我的代碼：
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// rest of the code. Note, DrawerList is the list of items in the drawer.
DrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
int editedPosition = position + 1;
Toast.makeText(MainActivity.this, "You selected item " + editedPosition, Toast.LENGTH_SHORT).show();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
switch(position){
case 0:
ft.replace(R.id.contentFrame, new NewLogFragment()).commit();
break;
}
mDrawerLayout.closeDrawer(mDrawerList);
}
}); // ... rest of the code
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/primary"
app:popupTheme="@style/Theme.AppCompat"
app:theme="@style/ToolbarTheme" />
<!-- Main layout -->
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/contentFrame"
android:layout_width="match_parent"
android:layout_height="match_parent"></FrameLayout>
<!-- Nav drawer -->
<ListView
android:id="@android:id/list"
android:layout_width="305dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@android:color/white" />
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
NewLogFragment.java
public class NewLogFragment extends Fragment {
private Button bt_button;
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.newlog_layout, container, false);
bt_button = (Button) rootView.findViewById(R.id.bt_button);
bt_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getActivity(), AddWorkoutActivity.class);
intent.putExtra("type", 1);
startActivity(intent);
}
});
return rootView;
}
@Override
public void onDestroyView() {
super.onDestroyView();
}
newlog_layout.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/fragmentOne">
<LinearLayout
android:id="@+id/ll_buttons"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/bt_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/bt_button" />
</LinearLayout>
</RelativeLayout>
也許我沒有正確地構建我的項目......但是我已經在網上查找，這應該仍然有效。不知道什麼是錯的。任何關於構建我的項目的最佳方式的建議都會受到讚賞（關於是以這種方式保留它還是將所有內容都作爲片段或活動）。但我想先解決這個問題。
編輯加入AddWorkoutActivity.java
public class AddWorkoutActivity extends MainActivity implements View.OnClickListener {
TextView tv_warmupex, tv_mainex, tv_workout_type, tv_cycle, tv_week, tv_one_rm;
EditText ev_datepicker;
// more layout stuff
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.addworkout_layout);
dateFormatter = new SimpleDateFormat("MM-dd-yyyy", Locale.US);
Intent logFragmentIntent = getIntent();
workout_type = logFragmentIntent.getStringExtra("workout_type");
setUpLayout(workout_type);
}
// and a bunch of helper methods that do all the calculations
public void completeWorkout(MenuItem item) {
if (cb_wu_1.isChecked() && cb_wu_2.isChecked() && cb_wu_3.isChecked() &&
cb_me_1.isChecked() && cb_me_2.isChecked() && cb_me_3.isChecked()) {
// add workout to database
HashMap<String, String> queryValuesMap = new HashMap<String, String>();
queryValuesMap.put("table", MAIN_E);
queryValuesMap.put(WEEK, String.valueOf(e_info[1])); // get latest cycle/week for this exercise and +1 to add to the table
queryValuesMap.put(CYCLE, String.valueOf(e_info[0]));
queryValuesMap.put(WEIGHT, getWeightString());
queryValuesMap.put(DATE_CREATED, changeDateFormat(ev_datepicker.getText().toString()));
queryValuesMap.put(NOTES, "notes");
queryValuesMap.put(MAIN_EXERCISE, workout_type);
dbTools.insertExercise(queryValuesMap);
// Update 1RM table if a new rep max is achieved during current workout
if (Double.parseDouble(getWeightString())>oneRepMax){
HashMap<String, String> queryValuesMapOneRM = new HashMap<String, String>();
queryValuesMapOneRM.put(MAIN_EXERCISE, workout_type); // get latest cycle/week for this exercise and +1 to add to the table
queryValuesMapOneRM.put(WEIGHT, getWeightString());
queryValuesMapOneRM.put(DATE_CREATED, changeDateFormat(ev_datepicker.getText().toString()));
dbTools.updateExerciseRepMax(queryValuesMapOneRM);
}
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
} else {
/*if not all buttons are clicked, show a toast
telling user to click all buttons to complete workout
*/
}
}
}
檢查您在NewLogFragment類中的導入片段應從spport.v4導入 – Shiva
它確實...我已經檢查過所有java類 – naja
您是否在manifest中註冊了AddWorkoutActivity？你可以發佈AddWorkoutActivity類的相關代碼嗎？ – Shiva