java为什么在提交片段后出现错误“getParentActivityIntent:badActivity name”?
我正在创建一个简单的FragmentList
应用程序,但由于某些原因,我不断收到错误:
Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName +
"' in manifest");
在我的调试器中Activity.java
这发生在我的MainActivity.java
文件.commit()
之后:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fm = getSupportFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.myContainer);
if(fragment == null){
fragment = new MyFragment();
fm.beginTransaction()
.add(R.id.myContainer, fragment)
.commit();
}
}
}
MyFragment。java文件:
public class MyFragment extends ListFragment {
List<Course> courses = new CourseData().courseArrayList();
public MyFragment(){
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ArrayAdapter arrayAdapter = new ArrayAdapter(getActivity(), R.layout.courselist_item, courses);
setListAdapter(arrayAdapter);
}
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.courselist_item, container, false);
return view;
}
}
ArrayAdapter。java:
public class ArrayAdapter extends 安卓.widget.ArrayAdapter<Course> {
private Context context;
private List<Course> courses;
public ArrayAdapter(@NonNull Context context, int resource, List<Course> courses) {
super(context, resource, courses);
this.context = context;
this.courses = courses;
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
Course course = courses.get(position);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.courselist_item, null);
ImageView imageView = view.findViewById(R.id.course_image_id);
imageView.setImageResource(course.getImageResourceId(context));
TextView textView = view.findViewById(R.id.course_name);
textView.setText(course.getCourseName());
return view;
}
}
当然。java:
package com.krish.mylistfragmennt;
import 安卓.content.Context;
public class Course {
private String courseName;
private String courseImage;
public Course(String courseName, String courseImage) {
this.courseName = courseName;
this.courseImage = courseImage;
}
public int getImageResourceId(Context context){
return context.getResources().getIdentifier(this.courseImage, "drawable", context.getPackageName());
}
public String getCourseName() {
return courseName;
}
public void setCourseName(String courseName) {
this.courseName = courseName;
}
public String getCourseImage() {
return courseImage;
}
public void setCourseImage(String courseImage) {
this.courseImage = courseImage;
}
}
CourseData。java:
public class CourseData {
public String[] courseNames = {"First Course", "Second Course", "Third Course"};
public ArrayList<Course> courseArrayList(){
ArrayList<Course> list = new ArrayList<>();
for(int i = 0; i< courseNames.length; i++){
Course course = new Course(courseNames[i], courseNames[i].replace(" ", "").toLowerCase());
list.add(course);
}
return list;
}
}
清单文件:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
package="com.krish.mylistfragmennt">
<application
安卓:allowBackup="true"
安卓:icon="@mipmap/ic_launcher"
安卓:label="@string/app_name"
安卓:roundIcon="@mipmap/ic_launcher_round"
安卓:supportsRtl="true"
安卓:theme="@style/Theme.MyListFragmennt">
<activity 安卓:name=".MainActivity"
安卓:parentActivityName=".MainActivity">
<intent-filter>
<action 安卓:name="安卓.intent.action.MAIN" />
<category 安卓:name="安卓.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
共 (0) 个答案