Fragment碎片是可嵌入到活动中的UI片段，能让程序更加合理利用大屏幕。
Fragment基本用法
在一个活动中添加2个Fragment，这两个Fragment平方活动空间。
1、创建左侧的Fragment布局left_fragment.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">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="Button"/>
</LinearLayout>
创建右侧的Fragment布局right_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:background="#00ff00"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:textSize="20sp"
android:text="This is right fragment."/>
</LinearLayout>
2、创建Fragment类
左侧Fragment类LeftFragment:
public class LeftFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.left_fragment, container, false);
return view;
}
}
右侧Fragment类RightFragment:
public class RightFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.right_fragment, container, false);
return view;
}
}
3、在活动布局中添加Fragment
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="@+id/left_fragment"
android:name="com.jyoryo.app.android.study.LeftFragment"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"/>
<fragment
android:id="@+id/right_fragment"
android:name="com.jyoryo.app.android.study.RightFragment"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"/>
</LinearLayout>
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