Fragment在xml中使用

Demo下载地址：http://download.csdn.net/detail/baopengjian/9336883

Fragment在xml中使用，Fragment之间通信

（1）FirstMethodActivity

publicclassFirstMethodActivityextendsFragmentActivity{

@Override

protectedvoidonCreate(Bundlearg0){

super.onCreate(arg0);

setContentView(R.layout.activity_first);

}

}

activity_first.xml:

<RelativeLayoutxmlns: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"

tools:context="com.bpj.fragmentdemo.MainActivity">

<fragment

android:id="@+id/fg1"

android:name="com.bpj.fragmentdemo.fragment.FirstMethodFragment1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:text="@string/first_method"/>

<fragment

android:layout_below="@id/fg1"

android:id="@+id/fg2"

android:name="com.bpj.fragmentdemo.fragment.FirstMethodFragment2"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/first_method"/>

</RelativeLayout>

(2)Fragment2:

publicclassFirstMethodFragment2extendsFragment{

privateContextcontext;

privateTextViewtv_fragment1,tv_fragment2,tv_fragment3;

privateStringversionName,VersionCode;

privateintscreenWidth;

privateintscreenHeight;

privateFilesdCardDir;

privatelongtotalSpace;

privateStringtotalSize,usableSize;

@Override

publicViewonCreateView(LayoutInflaterinflater,ViewGroupcontainer,BundlesavedInstanceState){

Viewview=inflater.inflate(R.layout.fragment_first2,null);

tv_fragment1=(TextView)view.findViewById(R.id.tv_fragment1);

tv_fragment2=(TextView)view.findViewById(R.id.tv_fragment2);

tv_fragment3=(TextView)view.findViewById(R.id.tv_fragment3);

returnview;

}

@Override

publicvoidonActivityCreated(BundlesavedInstanceState){

super.onActivityCreated(savedInstanceState);

context=getActivity();

try{

PackageInfoinfo=context.getPackageManager().getPackageInfo(context.getPackageName(),0);

versionName=info.versionName;

VersionCode=info.versionCode+"";

}catch(NameNotFoundExceptione){

e.printstacktrace();

}

displayMetricsmetrics=newdisplayMetrics();

getActivity().getwindowManager().getDefaultdisplay().getMetrics(metrics);

screenWidth=metrics.widthPixels;

screenHeight=metrics.heightPixels;

if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){

sdCardDir=Environment.getExternalStorageDirectory();

totalSpace=sdCardDir.getTotalSpace();

totalSize=Formatter.formatFileSize(context,totalSpace);

usableSize=Formatter.formatFileSize(context,sdCardDir.getUsableSpace());

}

}

publicvoidsetText(){

tv_fragment1.setText("versionName:"+versionName+";versionCode:"+VersionCode);

tv_fragment2.setText("screenWidth:"+screenWidth+";screenHeight:"+screenHeight);

tv_fragment3.setText("sdDir:"+sdCardDir.getPath()+"\n"+"totalSize="+totalSize+";usableSize="+usableSize);

}

publicvoidclear(){

tv_fragment1.setText(null);

tv_fragment2.setText(null);

tv_fragment3.setText(null);

}

}

fragment_first2.xml:

<RelativeLayoutxmlns:android=" http://schemas.android.com/apk/res/android "

xmlns:tools=" http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="600dp"

android:background="@android:color/holo_blue_light"

tools:context="com.bpj.fragmentdemo.MainActivity">

<TextView

android:id="@+id/tv_fragment1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:layout_marginLeft="20dp"

android:layout_marginTop="14dp"

android:text="Fragment2_1"/>

<TextView

android:id="@+id/tv_fragment3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignLeft="@+id/tv_fragment2"

android:layout_below="@+id/tv_fragment2"

android:layout_marginTop="105dp"

android:text="Fragment2_3"/>

<TextView

android:id="@+id/tv_fragment2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignLeft="@+id/tv_fragment1"

android:layout_below="@+id/tv_fragment1"

android:layout_marginTop="100dp"

android:text="Fragment2_2"/>

</RelativeLayout>

(3)Fragment1:

publicclassFirstMethodFragment1extendsFragmentimplementsOnClickListener{

privateTextViewtv1,tv2;

privateFirstMethodFragment2mFragment2;

@Override

publicViewonCreateView(LayoutInflaterinflater,

BundlesavedInstanceState){

Viewview=inflater.inflate(R.layout.fragment_first1,null);

tv1=(TextView)view.findViewById(R.id.tv1);

tv1.setonClickListener(this);

tv2=(TextView)view.findViewById(R.id.tv2);

tv2.setonClickListener(this);

returnview;

}

@Override

publicvoidonActivityCreated(BundlesavedInstanceState){

super.onActivityCreated(savedInstanceState);

mFragment2=(FirstMethodFragment2)getActivity().getSupportFragmentManager().findFragmentById(R.id.fg2);

}

@Override

publicvoidonClick(Viewview){

switch(view.getId()){

caseR.id.tv1:

mFragment2.setText();

break;

caseR.id.tv2:

mFragment2.clear();

break;

}

}

}

<RelativeLayoutxmlns: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"

tools:context="com.bpj.fragmentdemo.MainActivity">

<TextView

android:id="@+id/tv1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:layout_marginLeft="18dp"

android:layout_marginTop="42dp"

android:text="Fragment1"/>

<TextView

android:id="@+id/tv2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBottom="@+id/tv1"

android:layout_marginLeft="23dp"

android:layout_toRightOf="@+id/tv1"

android:text="Fragment2"/>

</RelativeLayout>