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android Fragment 实例 Listfragment listiew 下拉刷新 上拉加载 横向滑动事件监听

2024-07-30 11:41:37   217人阅读

Android Fragment开发实例及他色功能说明

代码太长，请网盘下载附件源代码： http://yunpan.cn/cs24a2Z7C5kRk （提取码：a0cf）  有疑问的欢迎联系QQ972910164


一、 CustomListView说明：可下拉刷新，上拉加载，横向滑动接口回调，
/**
 * 功能类似ListView,天机以下特性：
 * 1. 可下拉刷新,上拉加载，实现CustomListView.OnPullListener接口
 * 3. Slide切换，实现CustomListView.OnSlideListener接口
 * @author zhanghao 20141029
 */
（需要自定义享用的提示文字）
<string name="refreshing">refreshing</string>
    <string name="loading">loading</string>
    <string name="release_ref">release to refresh</string>
    <string name="pull_toref">pull down to refresh</string>
    <string name="latest_update_time">latest update time: <xliff:g id="UPDATE_TIME">%1$s</xliff:g></string>


二.  CustomListFragment功能说明：可下拉刷新，上拉加载，横向滑动接口回调，


具有ListFragment所有功能，天机下拉刷新和上拉加载功能，还有Slide左右滑动切换回调接口；


用法介绍：
使用时可用自己的Fragment继承CustomListFragment，重写onCreateView函数：
1. 直接返回custom_list_fragment_content.xml布局Layout, 
比如
@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        if (container == null) {
            // We have different layouts, and in one of them this
            // fragment‘s containing frame doesn‘t exist.  The fragment
            // may still be created from its saved state, but there is
            // no reason to try to create its view hierarchy because it
            // won‘t be displayed.  Note this is not needed -- we could
            // just run the code below, where we would create and return
            // the view hierarchy; it would just never be used.
            return null;
        }
        View root = inflater.inflate(R.layout.custom_list_fragment_content, null);
        return root;
    }


2. 需要外加控件自定义布局myfragment.xml:
(包含custom_list_fragment_content.xml)
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
    <TextView
        android:id="@+id/last_synctime_message"
        android:layout_width="match_parent"
        android:layout_height="@dimen/error_message_height"
        android:paddingLeft="8dip"
        android:paddingRight="8dip"
        android:gravity="right|center_vertical"
        android:text="@string/no_last_synctime"
        android:singleLine="true"
        android:ellipsize="end"
        android:background="@color/synctime_bar_background"
        android:visibility="gone"
        />
    <View
        android:layout_width="match_parent"
        android:layout_height="1px"
        android:background="?android:attr/listDivider" />
  <!-- 包含custom_list_fragment_content.xml -->
    <include
        layout="@layout/custom_list_fragment_content"
        android:id="@+id/list_panel"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1"
        />


    <!-- Message list error overlays are dynamically inserted here -->


</LinearLayout>
然后，
public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.myfragment, null);
        return root;
    }


有兴趣的同学可以看看源代码：
package com.custom.listfragment.demo;


import android.annotation.SuppressLint;
import android.app.Fragment;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
/**
 * 功能类似ListFragment,天机以下特性：
 * 1. 可下拉刷新，实现CustomListView.OnPullListener接口
 * 2. 上拉加载（默认关闭）
 * 3. Slide切换，实现CustomListView.OnSlideListener接口
 * @author zhanghao 20141029
 */
@SuppressLint("NewApi") public class CustomListFragment extends Fragment {
final private Handler mHandler = new Handler();


final private Runnable mRequestFocus = new Runnable() {
   public void run() {
       mList.focusableViewAvailable(mList);
   }
};


final private AdapterView.OnItemClickListener mOnClickListener
       = new AdapterView.OnItemClickListener() {
   public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
       onListItemClick((ListView)parent, v, position, id);
   }
};


ListAdapter mAdapter;
CustomListView mList;
View mEmptyView;
TextView mStandardEmptyView;
View mProgressContainer;
View mListContainer;
CharSequence mEmptyText;
boolean mListShown;


public CustomListFragment() {
}


/**
* Provide default implementation to return a simple list view.  Subclasses
* can override to replace with their own layout.  If doing so, the
* returned view hierarchy <em>must</em> have a ListView whose id
* is {@link android.R.id#list android.R.id.list} and can optionally
* have a sibling view id {@link android.R.id#empty android.R.id.empty}
* that is to be shown when the list is empty.
* 
* <p>If you are overriding this method with your own custom content,
* consider including the standard layout {@link android.R.layout#list_content}
* in your layout file, so that you continue to retain all of the standard
* behavior of ListFragment.  In particular, this is currently the only
* way to have the built-in indeterminant progress state be shown.
*/


/**
* Attach to list view once the view hierarchy has been created.
*/
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
   super.onViewCreated(view, savedInstanceState);
   ensureList();
}


/**
* Detach from list view.
*/
public void onDestroyView() {
   mHandler.removeCallbacks(mRequestFocus);
   mList = null;
   mListShown = false;
   mEmptyView = mProgressContainer = mListContainer = null;
   mStandardEmptyView = null;
   super.onDestroyView();
}


/**
* This method will be called when an item in the list is selected.
* Subclasses should override. Subclasses can call
* getListView().getItemAtPosition(position) if they need to access the
* data associated with the selected item.
*
* @param l The ListView where the click happened
* @param v The view that was clicked within the ListView
* @param position The position of the view in the list
* @param id The row id of the item that was clicked
*/
public void onListItemClick(ListView l, View v, int position, long id) {
}


/**
* Provide the cursor for the list view.
*/
public void setListAdapter(ListAdapter adapter) {
   boolean hadAdapter = mAdapter != null;
   mAdapter = adapter;
   if (mList != null) {
       mList.setAdapter(adapter);
       if (!mListShown && !hadAdapter) {
           // The list was hidden, and previously didn‘t have an
           // adapter.  It is now time to show it.
           setListShown(true, getView().getWindowToken() != null);
       }
   }
}


/**
* Set the currently selected list item to the specified
* position with the adapter‘s data
*
* @param position
*/
public void setSelection(int position) {
   ensureList();
   mList.setSelection(position);
}


/**
* Get the position of the currently selected list item.
*/
public int getSelectedItemPosition() {
   ensureList();
   return mList.getSelectedItemPosition();
}


/**
* Get the cursor row ID of the currently selected list item.
*/
public long getSelectedItemId() {
   ensureList();
   return mList.getSelectedItemId();
}


/**
* Get the activity‘s custom list view widget.
*/
public CustomListView getListView() {
   ensureList();
   return mList;
}


/**
* The default content for a ListFragment has a TextView that can
* be shown when the list is empty.  If you would like to have it
* shown, call this method to supply the text it should use.
*/
public void setEmptyText(CharSequence text) {
   ensureList();
   if (mStandardEmptyView == null) {
       throw new IllegalStateException("Can‘t be used with a custom content view");
   }
   mStandardEmptyView.setText(text);
   if (mEmptyText == null) {
       mList.setEmptyView(mStandardEmptyView);
   }
   mEmptyText = text;
}


/**
* Control whether the list is being displayed.  You can make it not
* displayed if you are waiting for the initial data to show in it.  During
* this time an indeterminant progress indicator will be shown instead.
* 
* <p>Applications do not normally need to use this themselves.  The default
* behavior of ListFragment is to start with the list not being shown, only
* showing it once an adapter is given with {@link #setListAdapter(ListAdapter)}.
* If the list at that point had not been shown, when it does get shown
* it will be do without the user ever seeing the hidden state.
* 
* @param shown If true, the list view is shown; if false, the progress
* indicator.  The initial value is true.
*/
public void setListShown(boolean shown) {
   setListShown(shown, true);
}


/**
* Like {@link #setListShown(boolean)}, but no animation is used when
* transitioning from the previous state.
*/
public void setListShownNoAnimation(boolean shown) {
   setListShown(shown, false);
}


/**
* Control whether the list is being displayed.  You can make it not
* displayed if you are waiting for the initial data to show in it.  During
* this time an indeterminant progress indicator will be shown instead.
* 
* @param shown If true, the list view is shown; if false, the progress
* indicator.  The initial value is true.
* @param animate If true, an animation will be used to transition to the
* new state.
*/
private void setListShown(boolean shown, boolean animate) {
   ensureList();
   if (mProgressContainer == null) {
       throw new IllegalStateException("Can‘t be used with a custom content view");
   }
   if (mListShown == shown) {
       return;
   }
   mListShown = shown;
   if (shown) {
       if (animate) {
           mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
                   getActivity(), android.R.anim.fade_out));
           mListContainer.startAnimation(AnimationUtils.loadAnimation(
                   getActivity(), android.R.anim.fade_in));
       } else {
           mProgressContainer.clearAnimation();
           mListContainer.clearAnimation();
       }
       mProgressContainer.setVisibility(View.GONE);
       mListContainer.setVisibility(View.VISIBLE);
   } else {
       if (animate) {
           mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
                   getActivity(), android.R.anim.fade_in));
           mListContainer.startAnimation(AnimationUtils.loadAnimation(
                   getActivity(), android.R.anim.fade_out));
       } else {
           mProgressContainer.clearAnimation();
           mListContainer.clearAnimation();
       }
       mProgressContainer.setVisibility(View.VISIBLE);
       mListContainer.setVisibility(View.GONE);
   }
}


/**
* Get the ListAdapter associated with this activity‘s ListView.
*/
public ListAdapter getListAdapter() {
   return mAdapter;
}


private void ensureList() {
   if (mList != null) {
       return;
   }
   View root = getView();
   if (root == null) {
       throw new IllegalStateException("Content view not yet created");
   }
   if (root instanceof CustomListView) {
       mList = (CustomListView)root;
   } else {
       mStandardEmptyView = (TextView)root.findViewById(android.R.id.empty);
       if (mStandardEmptyView == null) {
           mEmptyView = root.findViewById(android.R.id.empty);
       } else {
           mStandardEmptyView.setVisibility(View.GONE);
       }
       mProgressContainer = root.findViewById(R.id.progressContainer);
       mListContainer = root.findViewById(R.id.listContainer);
       View rawListView = root.findViewById(android.R.id.list);
       if (!(rawListView instanceof ListView)) {
           if (rawListView == null) {
               throw new RuntimeException(
                       "Your content must have a ListView whose id attribute is " +
                       "‘android.R.id.list‘");
           }
           throw new RuntimeException(
                   "Content has view with id attribute ‘android.R.id.list‘ "
                   + "that is not a ListView class");
       }
       mList = (CustomListView)rawListView;
       if (mEmptyView != null) {
           mList.setEmptyView(mEmptyView);
       } else if (mEmptyText != null) {
           mStandardEmptyView.setText(mEmptyText);
           mList.setEmptyView(mStandardEmptyView);
       }
   }
   mListShown = true;
   mList.setOnItemClickListener(mOnClickListener);
   if (mAdapter != null) {
       ListAdapter adapter = mAdapter;
       mAdapter = null;
       setListAdapter(adapter);
   } else {
       // We are starting without an adapter, so assume we won‘t
       // have our data right away and start with the progress indicator.
       if (mProgressContainer != null) {
           setListShown(false, false);
       }
   }
   mHandler.post(mRequestFocus);
}


public void setListViewOnPullListener(CustomListView.OnPullListener onPullListener) {
mList.setOnPullListener(onPullListener);
}


public void setListViewOnSlideListener(CustomListView.OnSlideListener onSlideListener) {
mList.setOnSlideListener(onSlideListener);
}


public void onRefrshComplete() {
mList.onRefreshComplete();
}


public void onl oadComplete() {
mList.onLoadComplete();
}


public void setPullUpLoadMode(CustomListView.LoadMode loadMode) {
mList.setLoadMode(loadMode);
}
}

android Fragment 实例 Listfragment listiew 下拉刷新 上拉加载 横向滑动事件监听


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