即时尝试使用setContentView切换到其中包含片段的布局 但每次都崩溃 我应该怎么做? 这是我的整个代码: (当我点击activity_main中的按钮时,它必须切换到fragment_layout) (fragmant_layout有一个片段,分段的布局是layout1) (当我点击按钮切换时崩溃)将视图更改为android中的片段视图
主要活动:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void switchlayout(View view) {//when the button in clicked
setContentView(R.layout.fragment_layout);
}
}
片段类:
public class frgment extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.layout1,container,false);
}
}
activity_main.xml中:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".fragmenttest.MainActivity">
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="switchlayout"
android:layout_marginTop="74dp"
android:id="@+id/button" />
</RelativeLayout>
fragment_layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:name="alirezamellat.fragmenttest.frgment"
></fragment>
</LinearLayout>
layout1.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent"></View>
</LinearLayout>
使用片段经理和膨胀您的片段父视图。请看看android :: 提供的资源https://developer.android.com/guide/components/fragments.html – Bayou