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SlidingPaneLayout的基本使用
其他论坛看到的,为了让更多人看到,所以选择了原创
SlidingPaneLayout是V4包中新添加的组件,可以实现两列面板的切换。说先来看看API文档的说明:
SlidingPanelLayout为在UI最上层的使用提供了一个水平的,多个面板的布局。左边的面板可以看作是一个内容列表或者是浏览,右边的面板的任务是显示详细的内容。
SlidingPaneLayout类也是直接继承于ViewGroup类,所以这个类也是当作容器类使用,在使用时通常可以和Fragement组件一起使用。下面是一个xiaoDemo,左边是网站url,右边显示网站。
首先是各个布局文件:
主布局文件actvity_main.xml:
<android.support.v4.widget.SlidingPaneLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/slidingpanellayout" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" > <fragment android:id="@+id/leftfragment" android:name="com.example.android_slidingpanellayout1.BookMarkerFragment" android:layout_width="100dp" android:layout_height="match_parent" android:layout_gravity="left" /> <fragment android:id="@+id/rightfragment" android:name="com.example.android_slidingpanellayout1.ShowFragment" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="right" android:layout_weight="1" /> </android.support.v4.widget.SlidingPaneLayout>
标签页使用的布局文件(bookmarker.xml)
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <ListView android:id="@+id/listview" android:layout_width="match_parent" android:layout_height="match_parent"/> </LinearLayout>
内容页使用的布局文件(show.xml)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<WebView
android:id="@+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
标签页中listview使用的布局文件(mytext.xml):
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/text" android:layout_width="match_parent" android:layout_height="40dp" android:gravity="center" android:textAlignment="center" /> </LinearLayout>
标签页的Fragment(BookMarkerFragement.java)
package com.example.android_slidingpanellayout1; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.Fragment; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.ListView; public class BookMarkerFragment extends Fragment { public interface BookmarkListener { public void onChangeBookmark(String bookmark); } public BookmarkListener myActionObject = null; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.bookmarker, container, false); initListView(view); return view; } @Override public void onAttach(Activity activity) { if (!(activity instanceof BookmarkListener)) { throw new ClassCastException(); } myActionObject = (BookmarkListener) activity; super.onAttach(activity); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { MenuItem item1 = menu.add(1, 1, 1, "分享"); item1.setShowAsAction(MenuItem.SHOW_AS_ACTION_WITH_TEXT | MenuItem.SHOW_AS_ACTION_ALWAYS); ImageView imageView = new ImageView( BookMarkerFragment.this.getActivity()); imageView.setBackgroundResource(R.drawable.share); imageView.setLayoutParams(new LayoutParams(50, 50)); item1.setActionView(imageView); } // 初始化listview public void initListView(View view) { ListView lv = (ListView) view.findViewById(R.id.listview); List<String> list = new ArrayList<String>(); list.add("网易"); list.add("腾讯"); list.add("新浪"); list.add("搜狐"); ArrayAdapter adapter = new ArrayAdapter( BookMarkerFragment.this.getActivity(), R.layout.mytextview, R.id.text, list); lv.setAdapter(adapter); lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { switch (position) { case 0: myActionObject.onChangeBookmark("http://www.163.com"); break; case 1: myActionObject.onChangeBookmark("http://www.qq.com"); break; case 2: myActionObject.onChangeBookmark("http://www.sina.com"); break; case 3: myActionObject.onChangeBookmark("http://www.sohu.com"); break; } } }); } }
内容页面(ShowFragment.java)
package com.example.android_slidingpanellayout1;
import android.app.Activity; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.webkit.WebView;
public class ShowFragment extends Fragment {
WebView webview=null;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.show, container, false);
webview=(WebView) view.findViewById(R.id.webview);
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
public WebView getWebView()
{
return webview;
}
}
主界面(MainActivity.java)
package com.example.android_slidingpanellayout1;
/*
*
* 实现一个书签的小例子
*
*
*/ import com.example.android_slidingpanellayout1.BookMarkerFragment.BookmarkListener;
import android.os.Bundle; import android.app.ActionBar; import android.app.Activity; import android.app.Fragment; import android.app.FragmentTransaction; import android.support.v4.widget.SlidingPaneLayout; import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener; import android.view.Menu; import android.view.View; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.Toast;
public class MainActivity extends Activity implements BookmarkListener {
Fragment bookmarkerFragment;
Fragment showFragment;
SlidingPaneLayout spl = null;
ActionBar actionBar = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
actionBar = this.getActionBar();
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayHomeAsUpEnabled(true);
spl = (SlidingPaneLayout) this.findViewById(R.id.slidingpanellayout);
spl.setPanelSlideListener(new PanelSlideListener() {
@Override
public void onPanelClosed(View view) {
MainActivity.this.getFragmentManager()
.findFragmentById(R.id.leftfragment)
.setHasOptionsMenu(false);
}
@Override
public void onPanelOpened(View viw) {
MainActivity.this.getFragmentManager()
.findFragmentById(R.id.leftfragment)
.setHasOptionsMenu(true);
}
@Override
public void onPanelSlide(View arg0, float arg1) {
}
});
}
@Override
public void onChangeBookmark(String bookmark) {
ShowFragment sf = (ShowFragment) MainActivity.this.getFragmentManager()
.findFragmentById(R.id.rightfragment);
WebView webView = sf.getWebView();
WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
WebViewClient client = new WebViewClient();
webView.setWebViewClient(client);
webView.loadUrl(bookmark);
}
}