从片段调用片段 [英] Call fragment from fragment
问题描述
我有一个带有按钮的活动,当我单击时,我用片段上的另一个按钮调用该片段.但是,当单击片段的按钮时,我无法调用第二个片段.这是我的来源,非常简单: activity_main.xml:
i have an activity with button on it and when a click i call the fragment with another button on fragment. but when click on fragment's button i cant call a second fragment. this is my source, pretty simple: activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
tools:context=".MainActivity" >
<Button
android:id="@+id/btn_click"
android:text="Call Fragment"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:onClick="onClick"
/>
</LinearLayout>
fragment1.xml
fragment1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0f0f0"
android:orientation="vertical" >
<TextView
android:id="@+id/fragment1"
android:text="Fragment 1"
android:textSize="25sp"
android:gravity="center"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
<Button
android:id="@+id/btn_frag2"
android:text="Call Fragment 2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
fragment2.xml
fragment2.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0f0f0"
android:orientation="vertical" >
<TextView
android:id="@+id/fragment2"
android:text="Fragment 2"
android:textSize="25sp"
android:gravity="center_vertical|center_horizontal"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
</LinearLayout>
MainActivity.java
MainActivity.java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public void onClick(View v) {
Fragment1 fragment1 = new Fragment1();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(android.R.id.content, fragment1);
fragmentTransaction.commit();
}
}
Fragment1.java
Fragment1.java
public class Fragment1 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment1, container, false);
}
public void onClick2(View view) {
Fragment2 fragment2 = new Fragment2();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment1, fragment2);
fragmentTransaction.commit();
}
}
Fragment2.java
Fragment2.java
public class Fragment2 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment2, container, false);
}
}
我的代码有什么问题?
推荐答案
我认为现在可以使用片段嵌套了,只需更新反向可计算性jar
I think now Fragment nesting is available just update the back computability jar
现在让我们自己研究问题.
now lets dig in the problem it self .
public void onClick2(View view) {
Fragment2 fragment2 = new Fragment2();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment1, fragment2);
fragmentTransaction.commit();
}
我认为R.id.fragment1
属于TextView
,这不是包含子视图的好地方,因为它不是ViewGroup
,您可以从xml中删除textView
并将其替换为LinearLayout
可以说,如果不告诉我是什么错误,它将起作用.
I think the R.id.fragment1
belongs to a TextView
which is not a good place to include child views in because its not a ViewGroup
, you can remove the textView
from the xml and replace it with a LinearLayout
lets say and it will work , if not tell me what the error .
fragment1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0f0f0"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/fragment1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
<Button
android:id="@+id/btn_frag2"
android:text="Call Fragment 2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
更新注释中的错误
Update for the error in the comment
public class Fragment1 extends Fragment implements OnClickListener{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment1, container, false);
((Button) v.findViewById(R.id.btn_frag2)).setOnClickListener(this);
return v;
}
public void onClick(View view) {
Fragment2 fragment2 = new Fragment2();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container, fragment2);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
}
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