Fragment总结
一、总体工程图：
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 {
@Override
public 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;
@Override
public 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。