我正在开发一个聊天应用程序,并想在 GMail 应用程序中添加一个导航抽屉。我是 Java 新手,所以请不要杀了我:DI 试图添加它,但它崩溃了 :(
这是我的 Chat.java 的一些代码
public class Chat extends FragmentActivity {
final String[] data ={"Login","Register"};
final String[] fragments ={
"com.linkr.chat.Login",
"com.linkr.chat.Register"};
String username;
BufferedReader reader;
PrintWriter writer;
ArrayList<String> userList = new ArrayList();
public TextView chatTextArea;
TextView inputTextArea;
Button onClickButton;
Boolean isConnected = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setTitle("Linkr");
/*<-- NAVDRAWER -->*/
setContentView(layout.activity_chat);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActionBar().getThemedContext(), android.R.layout.simple_list_item_1, data);
final DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
final ListView navList = (ListView) findViewById(R.id.drawer);
navList.setAdapter(adapter);
navList.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view, final int pos,long id){
drawer.setDrawerListener( new DrawerLayout.SimpleDrawerListener(){
@Override
public void onDrawerClosed(View drawerView){
super.onDrawerClosed(drawerView);
FragmentTransaction tx = getSupportFragmentManager().beginTransaction();
tx.replace(R.id.main, Fragment.instantiate(Chat.this, fragments[pos]));
tx.commit();
}
});
drawer.closeDrawer(navList);
}
});
FragmentTransaction tx = getSupportFragmentManager().beginTransaction();
tx.replace(R.id.main,Fragment.instantiate(Chat.this, fragments[0]));
tx.commit();
/*<-- NAVDRAWER END -->*/
我也不知道如何使用 NavigationDrawer。
这是我的 activity_chat.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="300dp"
android:layout_height="800dp"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".Chat"
android:text = "Linkr">
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="300dp"
android:layout_height="800dp"
tools:context=".MainActivity" >
<ListView
android:id="@+id/drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#FFF"
android:choiceMode="singleChoice"/>
</android.support.v4.widget.DrawerLayout>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/inputTextArea"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@+id/onClickButton"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Send"
android:id="@+id/onClickButton"
android:layout_alignBaseline="@+id/inputTextArea"
android:layout_alignBottom="@+id/inputTextArea"
android:layout_alignParentRight="true"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:ems="10"
android:id="@+id/chatTextArea"
android:layout_above="@+id/onClickButton"
android:layout_alignLeft="@+id/inputTextArea"
android:layout_alignParentTop="true"
android:layout_alignRight="@+id/onClickButton"/>
我需要另一个 XML 吗?有人可以告诉我这是如何工作的吗?感谢你们!:)