Tabhost与popuowindow

软件应用中，常看到一种效果是在点击更多时，弹出一更多的弹出框，其效果截图如下：

关键代码如下：

其中MenuView是自定义的一视图，在该视图中，主要是进行图片与文字的布局，以及处理弹出popupwindow弹框

intent = new Intent(this, Test2Activity.class);
spec = mTabHost
.newTabSpec("Test3")
.setIndicator(
new MenuView(this, "更多", res
.getDrawable(R.drawable.pic_more)))
.setContent(intent);
mTabHost.addTab(spec);
mTabHost.setOnTabChangedListener(this);

intent = new Intent(this, Test2Activity.class); spec = mTabHost .newTabSpec("Test3") .setIndicator( new MenuView(this, "更多", res .getDrawable(R.drawable.pic_more))) .setContent(intent); mTabHost.addTab(spec); mTabHost.setOnTabChangedListener(this);

TabChangeListener事件的处理如下：

@Override
public void onTabChanged(String tabId) {
if(TextUtils.equals(tabId, "Test3")) {
View v = mTabHost.getCurrentTabView();
//设置为空的目的使得事件不再向下传播，即不会响tabchange事件
v.setOnFocusChangeListener(null);
}
}

@Override public void onTabChanged(String tabId) { if(TextUtils.equals(tabId, "Test3")) { View v = mTabHost.getCurrentTabView(); //设置为空的目的使得事件不再向下传播，即不会响tabchange事件 v.setOnFocusChangeListener(null); } }

最后是MenuView的实现：

public class MenuView extends LinearLayout implements OnItemClickListener{
private PopupWindow popuwindWindow;
private ArrayList> datas = null;
private Context context;

public MenuView(Context context,String label, Drawable icon) {
super(context);
this.context = context;
datas = new ArrayList>();
init$Views();
this.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT, (float) 1));
setGravity(Gravity.CENTER);
setOrientation(LinearLayout.VERTICAL);
ImageView img = new ImageView(context);
img.setImageDrawable(icon);
addView(img);
TextView tv = new TextView(context);
tv.setText(label);
tv.setGravity(Gravity.CENTER);
tv.setBackgroundColor(Color.TRANSPARENT);
tv.setTextColor(Color.WHITE);
tv.setPadding(0,0, 0, 0);/***dimension***/
tv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT, (float) 0.0));
addView(tv);
tv.setClickable(false);
tv.setFocusable(false);
tv.setFocusableInTouchMode(false);
img.setClickable(false);
img.setFocusable(false);
img.setFocusableInTouchMode(false);
if(TextUtils.equals("更多", label)) {
setBackgroundDrawable(this.getResources().getDrawable(R.drawable.pub_tab_background_spec_selector));
}
else
setBackgroundDrawable(this.getResources().getDrawable(R.drawable.pub_tab_background_selector));
}

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
//定义弹出时的动画
popuwindWindow.setAnimationStyle(R.style.popupwindow_style);
popuwindWindow.showAsDropDown(this, -popuwindWindow.getWidth(),
this.getTop() + popuwindWindow.getHeight() + 5);
return super.onInterceptTouchEvent(ev);
}

private void init$Views() {
HashMap map = null;
map = new HashMap();
map.put("ico", R.drawable.more_help_img);
map.put("tv", "帮助");
datas.add(map);

map = new HashMap();
map.put("ico", R.drawable.more_netword_img);
map.put("tv", "网络");
datas.add(map);

map = new HashMap();
map.put("ico", R.drawable.more_update_img);
map.put("tv", "更新");
datas.add(map);

map = new HashMap();
map.put("ico", R.drawable.pic_about);
map.put("tv", "关于");
datas.add(map);

LayoutInflater inflater = LayoutInflater.from(context);
LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.test_gd, null);
GridView gdv = (GridView) layout.findViewById(R.id.test_gv_id);
//进行自适应屏幕的宽度
int tempWidth = 60 * datas.size() + 10 + (datas.size() - 1) * 5;
DisplayMetrics metrics = new DisplayMetrics();
((DashboardActivity)context).getWindowManager().getDefaultDisplay().getMetrics(metrics);
int disWidth = metrics.widthPixels;
int width = tempWidth > disWidth ? disWidth : tempWidth;
gdv.setLayoutParams(new LayoutParams(width, android.view.ViewGroup.LayoutParams.WRAP_CONTENT));
SimpleAdapter simpleAdapter = new SimpleAdapter(context, datas,
R.layout.test_gd_item, new String[] { "ico", "tv" }, new int[] {
R.id.ico_id, R.id.tv_id });
gdv.setAdapter(simpleAdapter);

popuwindWindow = new PopupWindow(layout, LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, true);
ColorDrawable color = new ColorDrawable(0);
popuwindWindow.setBackgroundDrawable(color);
gdv.setOnItemClickListener(this);
}

@Override
public void onItemClick(AdapterView parent, View view, int position,
long id) {
popuwindWindow.dismiss();
}
}

public class MenuView extends LinearLayout implements OnItemClickListener{ private PopupWindow popuwindWindow; private ArrayList> datas = null; private Context context; public MenuView(Context context,String label, Drawable icon) { super(context); this.context = context; datas = new ArrayList>(); init$Views(); this.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, (float) 1)); setGravity(Gravity.CENTER); setOrientation(LinearLayout.VERTICAL); ImageView img = new ImageView(context); img.setImageDrawable(icon); addView(img); TextView tv = new TextView(context); tv.setText(label); tv.setGravity(Gravity.CENTER); tv.setBackgroundColor(Color.TRANSPARENT); tv.setTextColor(Color.WHITE); tv.setPadding(0,0, 0, 0);/***dimension***/ tv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, (float) 0.0)); addView(tv); tv.setClickable(false); tv.setFocusable(false); tv.setFocusableInTouchMode(false); img.setClickable(false); img.setFocusable(false); img.setFocusableInTouchMode(false); if(TextUtils.equals("更多", label)) { setBackgroundDrawable(this.getResources().getDrawable(R.drawable.pub_tab_background_spec_selector)); } else setBackgroundDrawable(this.getResources().getDrawable(R.drawable.pub_tab_background_selector)); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { //定义弹出时的动画 popuwindWindow.setAnimationStyle(R.style.popupwindow_style); popuwindWindow.showAsDropDown(this, -popuwindWindow.getWidth(), this.getTop() + popuwindWindow.getHeight() + 5); return super.onInterceptTouchEvent(ev); } private void init$Views() { HashMap map = null; map = new HashMap(); map.put("ico", R.drawable.more_help_img); map.put("tv", "帮助"); datas.add(map); map = new HashMap(); map.put("ico", R.drawable.more_netword_img); map.put("tv", "网络"); datas.add(map); map = new HashMap(); map.put("ico", R.drawable.more_update_img); map.put("tv", "更新"); datas.add(map); map = new HashMap(); map.put("ico", R.drawable.pic_about); map.put("tv", "关于"); datas.add(map); LayoutInflater inflater = LayoutInflater.from(context); LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.test_gd, null); GridView gdv = (GridView) layout.findViewById(R.id.test_gv_id); //进行自适应屏幕的宽度 int tempWidth = 60 * datas.size() + 10 + (datas.size() - 1) * 5; DisplayMetrics metrics = new DisplayMetrics(); ((DashboardActivity)context).getWindowManager().getDefaultDisplay().getMetrics(metrics); int disWidth = metrics.widthPixels; int width = tempWidth > disWidth ? disWidth : tempWidth; gdv.setLayoutParams(new LayoutParams(width, android.view.ViewGroup.LayoutParams.WRAP_CONTENT)); SimpleAdapter simpleAdapter = new SimpleAdapter(context, datas, R.layout.test_gd_item, new String[] { "ico", "tv" }, new int[] { R.id.ico_id, R.id.tv_id }); gdv.setAdapter(simpleAdapter); popuwindWindow = new PopupWindow(layout, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true); ColorDrawable color = new ColorDrawable(0); popuwindWindow.setBackgroundDrawable(color); gdv.setOnItemClickListener(this); } @Override public void onItemClick(AdapterView parent, View view, int position, long id) { popuwindWindow.dismiss(); } }