[英]Activity destroyed using Fragment
I have a ListView in ListView.class
, when the User clicks on one item (let's say item at position =0) Fragment6 should be opened. 我有一个ListView ListView.class
,当用户点击一个项目(假设在位置项= 0)Fragment6应打开。
Additionally, I have a HandleListClick.class
that gets the position ( eg position = 0) and then uses a switch
to open a fragment, but I get an error. 另外,我有一个HandleListClick.class
获取位置(例如position = 0),然后使用switch
打开片段,但出现错误。
java.lang.IllegalStateException: Activity has been destroyed java.lang.IllegalStateException:活动已被破坏
How can I handle this annoying problem? 我该如何解决这个烦人的问题? My activity is declared in Manifest. 我的活动在清单中声明。
Here is my ListView.class
这是我的ListView.class
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
int itemPosition = position;
// ListView Clicked item value
String itemValue = (String) listView.getItemAtPosition(position);
if (position==0){
HandleListClick handleListClick = new HandleListClick();
handleListClick.getItemPosition(0);
}
}
Here is my handleListClick.class
这是我的handleListClick.class
public class HandleListClick extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_handle_list_click);
}
public void getItemPosition(int position) {
switch (position) {
case 0:
Fragment6 frag6 = null;
frag6 = new Fragment6();
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.framelayout, frag6)
.commit();
}
}
} }
Here is my Fragment6.java
这是我的Fragment6.java
public class Fragment6 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragmentdescrip6, container,false);
return v;
// ViewGroup rootView = (ViewGroup) inflater.inflate(
// R.layout.fragmentdescrip6, container, false);
// return rootView;
}
} }
Here is activity_handle_list_click.xml
这是activity_handle_list_click.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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"
tools:context="com.example.user.app.HandleListClick">
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id= "@+id/framelayout"
>
</FrameLayout>
</android.support.constraint.ConstraintLayout>
And here is fragmentdescrip6.xml
这是fragmentdescrip6.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frag6"
>
<TextView
android:id="@+id/textfrag6label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="foo"
android:textStyle="bold"
android:textColor="#FFFF4444"
android:textSize="20dp"
android:layout_marginTop="17dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:id="@+id/textfrag6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/textfrag6label"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="33dp"
android:textStyle="bold"
android:text="some Text" />
</RelativeLayout>
Try it this way 这样尝试
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// ListView Clicked item index
int itemPosition = position;
// ListView Clicked item value
String itemValue = (String) listView.getItemAtPosition(position);
if (position==0){
Intent intent = new Intent(CurrentActivity.this, HandleListClick.class);
intent.putExtra("POSITION", position);
startActivity(intent);
}
/* HandleListClick handleListClick = new HandleListClick();
handleListClick.getItemPosition(0);*/
}
}
Change the Activity code 更改活动代码
public class HandleListClick extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_handle_list_click);
Intent intent = getIntent();
int pos = intent.getIntExtra("POSITION",0);
getItemPosition(pos);
}
public void getItemPosition(int position) {
switch (position) {
case 0:
Fragment6 frag6 = null;
frag6 = new Fragment6();
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.framelayout, frag6)
.commit();
}
}
}
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