android - java.lang.IllegalArgumentException : No view found for id for fragment NewLogFragment 异常

Question

在我的项目中，我有一个位于 MainActivity.java 中的抽屉导航。该抽屉中的每个项目都会启动一个占据整个屏幕空间的不同 fragment 。其中一个 fragment 具有需要启动 Activity 的按钮(此 Activity 扩展了 MainActivity.java - 这背后的基本原理是保持抽屉导航可用)。当我按下该 fragment 中的任何按钮以启动另一项 Activity 时，出现此错误

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}

此处，NewLogFragment 是尝试启动新 Activity 的 fragment 。

基本上，我的项目结构是这样的:MainActivity:java -> 包含 NavDrawer 并启动一个 fragment -> 该 fragment 然后启动另一个 Activity ，这会导致错误。

这是我的一些代码:

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

<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>

新日志 fragment .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>

也许我没有正确构建我的项目...但我已经在网上查看过，这应该仍然有效。不知道出了什么问题。任何有关构建我的项目的最佳方式的建议也将受到赞赏(就是否保持这种方式或将所有内容都变成 fragment 或 Activity 而言)。但我想先解决这个问题。

编辑 添加 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
        */
    }
}

}

Answer 1

发生崩溃的原因是，您正在尝试用当前 Activity 中不包含的 ID 替换 fragment 。我的建议是更改项目结构，例如，为 NavDrawer 使用一个 Activity 并为每个菜单使用 fragment 。否则它会更复杂。请引用以下链接，http://www.androidhive.info/2013/11/android-sliding-menu-using-navigation-drawer/