QQ的滑动删除效果很不错,要实现这种效果,可以使用SwipeListView。
1. 下载com.fortysevendeg.swipelistview这个项目(以前GitHub上有,现在GitHub上没有了,百度了很多次才下载到的),导入Eclipse,右键单击,选择Properties->Android,选中Library下面的IsLibrary。
2. 新建一个项目MySwipeListView,加入SwipeListView这个库。
3. 在主窗体里面放入一个SwipeListView控件:
<LinearLayout xmlns: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\" android:orientation=\"vertical\" android:paddingBottom=\"@dimen/activity_vertical_margin\" android:paddingLeft=\"@dimen/activity_horizontal_margin\" android:paddingRight=\"@dimen/activity_horizontal_margin\" android:paddingTop=\"@dimen/activity_vertical_margin\" tools:context=\"com.hzhi.myswipelistview.MainActivity\" > <com.fortysevendeg.swipelistview.SwipeListView xmlns:swipe=\"http://schemas.android.com/apk/res-auto\" android:id=\"@+id/exampleSwipeListView\" android:listSelector=\"#00000000\" android:layout_width=\"fill_parent\" android:layout_height=\"wrap_content\" swipe:swipeBackView=\"@+id/back\" swipe:swipeCloseAllItemsWhenMoveList=\"true\" swipe:swipeDrawableChecked=\"@drawable/choice_selected\" swipe:swipeDrawableUnchecked=\"@drawable/choice_unselected\" swipe:swipeFrontView=\"@+id/front\" swipe:swipeMode=\"both\" swipe:swipeActionLeft=\"reveal\" swipe:swipeActionRight=\"dismiss\" swipe:swipeOpenOnLongPress=\"true\" /> </LinearLayout>
其中两个重要的属性:
swipe:swipeFrontView:上面的View,即不滑动时显示的View。
swipe:swipeBackView:下面的View,即滑动后显示的View。
这两个View都定义在SwipeListView的行布局文件里面:
<?xml version=\"1.0\" encoding=\"utf-8\"?> <FrameLayout xmlns:android=\"http://schemas.android.com/apk/res/android\" android:layout_width=\"fill_parent\" android:layout_height=\"fill_parent\" > <LinearLayout android:id=\"@+id/back\" android:layout_width=\"fill_parent\" android:layout_height=\"wrap_content\" android:background=\"#ffcccccc\" android:gravity=\"right\" android:tag=\"back\" > <Button android:layout_width=\"wrap_content\" android:layout_height=\"wrap_content\" android:id=\"@+id/btn_delete\" android:text=\"删除\"/> <Button android:layout_width=\"wrap_content\" android:layout_height=\"wrap_content\" android:id=\"@+id/btn_update\" android:text=\"更新\"/> </LinearLayout> <RelativeLayout android:orientation=\"vertical\" android:id=\"@+id/front\" android:layout_width=\"fill_parent\" android:layout_height=\"wrap_content\" android:background=\"#ffffffff\" > <ImageView android:layout_width=\"wrap_content\" android:layout_height=\"wrap_content\" android:id=\"@+id/example_row_iv_image\"/> <TextView android:layout_width=\"fill_parent\" android:layout_height=\"wrap_content\" android:layout_toRightOf=\"@id/example_row_iv_image\" android:id=\"@+id/example_row_tv_title\"/> <TextView android:layout_width=\"fill_parent\" android:layout_height=\"wrap_content\" android:layout_toRightOf=\"@id/example_row_iv_image\" android:layout_below=\"@id/example_row_tv_title\" android:id=\"@+id/example_row_tv_description\"/> </RelativeLayout> </FrameLayout>
SwipeListView的行布局文件使用FrameLayout布局,FrameLayout里面所有的所有子元素都堆叠在FrameLayout的左上角。
4. SwipeListView和其他ListView一样,也需要Adapter,使用方法也是一样的。这里就不详细讲了。
5. 在主窗体Java文件中实现SwipeListView的功能,代码如下:
package com.hzhi.myswipelistview; import android.support.v7.app.ActionBarActivity; import android.util.Log; import java.util.ArrayList; import com.fortysevendeg.swipelistview.BaseSwipeListViewListener; import com.fortysevendeg.swipelistview.SwipeListView; import android.os.Bundle; @SuppressWarnings(\"deprecation\") public class MainActivity extends ActionBarActivity { protected static final String TAG = \"MySwipeListView\"; private ArrayList<String> mList; private MyAdapter mAdapter; private SwipeListView mSwipeListView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); mSwipeListView = (SwipeListView) findViewById(R.id.exampleSwipeListView); mAdapter = new MyAdapter(this, mList, mSwipeListView); mSwipeListView.setAdapter(mAdapter); mSwipeListView.setSwipeListViewListener(new BaseSwipeListViewListener(){ @Override public void onChoiceChanged(int position, boolean selected) { Log.d(TAG, \"onChoiceChanged:\" + position + \", \" + selected); } @Override public void onChoiceEnded() { Log.d(TAG, \"onChoiceEnded\"); } @Override public void onChoiceStarted() { Log.d(TAG, \"onChoiceStarted\"); } @Override public void onClickBackView(int position) { Log.d(TAG, \"onClickBackView:\" + position); } @Override public void onClickFrontView(int position) { Log.d(TAG, \"onClickFrontView:\" + position); } @Override public void onClosed(int position, boolean fromRight) { Log.d(TAG, \"onClosed:\" + position + \",\" + fromRight); } @Override public void onDismiss(int[] reverseSortedPositions) { Log.d(TAG, \"onDismiss\"); } @Override public void onFirstListItem() { Log.d(TAG, \"onFirstListItem\"); } @Override public void onLastListItem() { Log.d(TAG, \"onLastListItem\"); } @Override public void onListChanged() { Log.d(TAG, \"onListChanged\"); mSwipeListView.closeOpenedItems(); } @Override public void onMove(int position, float x) { Log.d(TAG, \"onMove:\" + position + \",\" + x); } @Override public void onOpened(int position, boolean toRight) { Log.d(TAG, \"onOpened:\" + position + \",\" + toRight); } @Override public void onStartClose(int position, boolean right) { Log.d(TAG, \"onStartClose:\" + position + \",\" + right); } @Override public void onStartOpen(int position, int action, boolean right) { Log.d(TAG, \"onStartOpen:\" + position + \",\" + action + \",\" + right); } }); } private void initData(){ mList = new ArrayList<String>(); for (int i = 0; i <= 10; i++) mList.add(\"这是第\" + i +\"条数据!\"); } }
最主要的代码即mSwipeListView.setSwipeListViewListener(new BaseSwipeListViewListener(){}),通过这行代码,为SwipeListView控件设置了Listener,可以根据自己的需要重载BaseSwipeListViewListener的各种方法。
运行结果:
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