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RSS订阅原创 android中PopupWindow的使用教程
1.定义变量private View popView = null;private PopupWindow popupWindow = null;2.源码使用 if (popView == null) { popView = LayoutInflater.from(this).inflate(R.layout.popupwindow_layout,
2017-06-27 12:10:57
195
转载 ionic-移动端web的性能优化开源组件
在移动端开发webapp或者hybrid的app应用，由于网络，终端体验问题，对于移动端需要做好很多的优化，下面是本人在工作和学习发现的比较好的一些优化方案，现在整理一下，希望可以学习。1、四种方式优化ionic,接近原生体验http://scottbolinger.com/4-ways-to-make-your-ionic-app-feel-native/2、ionic的问题
2017-02-09 11:20:05
348
android 的类似于QQ分组的二级列表
package wjq.WidgetDemo;
import android.app.ExpandableListActivity;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Gravity;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ExpandableListView.ExpandableListContextMenuInfo;
public class ExpandableListDemo extends ExpandableListActivity{
private ExpandableListAdapter adapter;
//private MyExpandableListAdapter MyAdapter=new MyExpandableListAdapter();
/* (non-Javadoc)
* @see android.app.Activity#onCreate(android.os.Bundle)
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
adapter=new MyExpandableListAdapter();
setListAdapter(adapter);
registerForContextMenu(getExpandableListView());
}
/* (non-Javadoc)
* @see android.app.ExpandableListActivity#onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo)
*/
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
menu.setHeaderTitle("菜单");
menu.add(0, 0, 0, "Action");
}
/* (non-Javadoc)
* @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
*/
@Override
public boolean onContextItemSelected(MenuItem item) {
boolean flag=false;
// TODO Auto-generated method stub
ExpandableListContextMenuInfo menuInfo=(ExpandableListContextMenuInfo)item.getMenuInfo();
String title=((TextView)menuInfo.targetView).getText().toString();
int type=ExpandableListView.getPackedPositionType(menuInfo.packedPosition);
if (type==ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
int groupPos =ExpandableListView.getPackedPositionGroup(menuInfo.packedPosition);
int childPos =ExpandableListView.getPackedPositionChild(menuInfo.packedPosition);
CharSequence str="您单击了"+title;
Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
Log.i("tag", "Run Hereing...");
flag= true;
}
else
if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
int groupPos = ExpandableListView.getPackedPositionGroup(menuInfo.packedPosition);
CharSequence cs="您单击了"+title;
Toast.makeText(this, cs, Toast.LENGTH_SHORT).show();
Log.i("tag", "Run Here...");
flag= true;
}
return flag;
}
public class MyExpandableListAdapter extends BaseExpandableListAdapter {
// Sample data set. children[i] contains the children (String[]) for groups[i].
public String[] groups = { "我的好友", "新疆同学", "亲戚", "同事" };
public String[][] children = {
{ "胡算林", "张俊峰", "王志军", "二人" },
{ "李秀婷", "蔡乔", "别高", "余音" },
{ "摊派新", "张爱明" },
{ "马超", "司道光" }
};
public Object getChild(int groupPosition, int childPosition) {
return children[groupPosition][childPosition];
}
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
public int getChildrenCount(int groupPosition) {
return children[groupPosition].length;
}
public TextView getGenericView() {
// Layout parameters for the ExpandableListView
AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, 64);
TextView textView = new TextView(ExpandableListDemo.this);
textView.setLayoutParams(lp);
// Center the text vertically
textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
// Set the text starting position
textView.setPadding(36, 0, 0, 0);
return textView;
}
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
View convertView, ViewGroup parent) {
TextView textView = getGenericView();
textView.setText(getChild(groupPosition, childPosition).toString());
return textView;
}
public Object getGroup(int groupPosition) {
return groups[groupPosition];
}
public int getGroupCount() {
return groups.length;
}
public long getGroupId(int groupPosition) {
return groupPosition;
}
public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
ViewGroup parent) {
TextView textView = getGenericView();
textView.setText(getGroup(groupPosition).toString());
return textView;
}
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
public boolean hasStableIds() {
return true;
}
}
}
2014-08-12
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