Fragment总结

一、总体工程图：

Fragment总结

二、main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:baselineAligned="false"    android:orientation="vertical" >    <fragment        android:id="@+id/fragment1"        android:name="com.jltxgcy.fragmentdemo.Fragment1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_weight="1" />   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/main_layout"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:baselineAligned="false"    android:layout_weight="1" ></LinearLayout>    <TextView         android:id="@+id/tv_display"        android:layout_width="match_parent"        android:layout_height="wrap_content"/></LinearLayout>

三、fragment1.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#00ff00" >    <TextView        android:id="@+id/tv_fragment1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="This is fragment 1"        android:textColor="#000000"        android:textSize="25sp" /></LinearLayout>

四、fragment2.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ffff00" >    <TextView        android:id="@+id/tv_fragment2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="This is fragment 2"        android:textColor="#000000"        android:textSize="25sp" /></LinearLayout>

五、MainActivity.java

package com.jltxgcy.fragmentdemo;import android.os.Bundle;import android.app.Activity;import android.support.v4.app.FragmentActivity;import android.view.Menu;public class MainActivity extends FragmentActivity {public static final String TAG = "Fragment2";    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Fragment2 fragment2 = new Fragment2();          getSupportFragmentManager().beginTransaction().replace(R.id.main_layout, fragment2).commit();    }        public void testMainActivity(){    Fragment1 fragment1 = (Fragment1) getSupportFragmentManager().findFragmentById(R.id.fragment1);fragment1.testFragment1();    }        public void testFindviewById(){    findViewById(R.id.tv_display);    findViewById(R.id.tv_fragment2);    }}

六、Fragment1.java

package com.jltxgcy.fragmentdemo;import android.os.Bundle;import android.support.v4.app.Fragment;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class Fragment1 extends Fragment {@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {return inflater.inflate(R.layout.fragment1, container, false);}public void testFragment1(){Log.d("jltxgcy", "testFragment1");}}

七、Fragment2.java

package com.jltxgcy.fragmentdemo;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class Fragment2 extends Fragment {private ViewGroup mViewGroup;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {mViewGroup = container;testFragment2();return inflater.inflate(R.layout.fragment2, container, false);}public void testFragment2(){MainActivity mainActivity = (MainActivity)getActivity();mainActivity.testMainActivity();Fragment1 fragment1 = (Fragment1) getFragmentManager().findFragmentById(R.id.fragment1);fragment1.testFragment1();}public void testFindviewById(){mViewGroup.findViewById(R.id.tv_fragment2);getActivity().findViewById(R.id.tv_display);getActivity().findViewById(R.id.tv_fragment1);}}

八、上面分别介绍了动态和静态加载Fragment的过程。

Activity中获取自身控件View:findViewById(R.id.tv_display);

Activity中获取Fragment控件View:findViewById(R.id.tv_fragment2);

Activity中使用Fragment方法：

Fragment1 fragment1 = (Fragment1) getSupportFragmentManager().findFragmentById(R.id.fragment1);

fragment1.testFragment1();

Fragment中获取自身控件View:mViewGroup.findViewById(R.id.tv_fragment2);

Fragment中获取Activity控件View:getActivity().findViewById(R.id.tv_display);

Fragment中获取其他控件Fragment的View:getActivity().findViewById(R.id.tv_fragment1);

Fragment中使用Activity中的方法：

MainActivity mainActivity = (MainActivity)getActivity();
mainActivity.testMainActivity();

Fragment中使用其他Fragment中的方法：

Fragment1 fragment1 = (Fragment1) getFragmentManager().findFragmentById(R.id.fragment1);
fragment1.testFragment1();

九、程序运行最后结果为：

十、代码待后我会传到github上。

更多相关文章

随机推荐