原文地址：http://blog.****.net/singwhatiwanna/article/details/8892930
果大家时常用过微信或者用过iphone，就会发现有种从底部弹出的半透明菜单，这种菜单风格优美并且用户体验良好，先看一下效果。
MMAlert来自微信开放平台的sdk示例，其示例的代码有点乱，我做了删减和整理，只保留了MMAlert这个类的一部分功能，即只保留了实现上述效果的那个函数，因为其他函数比较简单，就是普通的AlertDialog，我觉得大家都懂，所以直接删掉了。
代码介绍
1 . 下面这段代码其实蛮好理解的，本质就是new一个对话框，然后将其放置在底部，为其设置theme和style，theme和style写的蛮好理解的， 具体大家可以看源码。数据呈现用的是Listview，为此我们需要new一个BaseAdapter对象来管理数据，BaseAdapter没什么特殊 之处，很好理解，具体请看代码。
/**
* @param context
* Context.
* @param title
* The title of this AlertDialog can be null .
* @param items
* button name list.
* @param alertDo
* methods call Id:Button + cancel_Button.
* @param exit
* Name can be null.It will be Red Color
* @return A AlertDialog
*/
public static Dialog showAlert(final Context context, final String title, final String[] items, String exit,
final OnAlertSelectId alertDo, OnCancelListener cancelListener)
{
String cancel = context.getString(R.string.app_cancel);
final Dialog dlg = new Dialog(context, R.style.MMTheme_DataSheet);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.alert_dialog_menu_layout, null);
final int cFullFillWidth = 10000;
layout.setMinimumWidth(cFullFillWidth);
final ListView list = (ListView) layout.findViewById(R.id.content_list);
AlertAdapter adapter = new AlertAdapter(context, title, items, exit, cancel);
list.setAdapter(adapter);
list.setDividerHeight(0); list.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
if (!(title == null || title.equals("")) && position - 1 >= 0)
{
alertDo.onClick(position - 1);
dlg.dismiss();
list.requestFocus();
}
else
{
alertDo.onClick(position);
dlg.dismiss();
list.requestFocus();
} }
});
// set a large value put it in bottom
Window w = dlg.getWindow();
WindowManager.LayoutParams lp = w.getAttributes();
lp.x = 0;
final int cMakeBottom = -1000;
lp.y = cMakeBottom;
lp.gravity = Gravity.BOTTOM;
dlg.onWindowAttributesChanged(lp);
dlg.setCanceledOnTouchOutside(true);
if (cancelListener != null)
dlg.setOnCancelListener(cancelListener); dlg.setContentView(layout);
dlg.show(); return dlg;
}
2. 如何使用MMAlert？很简单！
findViewById(R.id.send_img).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MMAlert.showAlert(SendToWXActivity.this, getString(R.string.send_img),
SendToWXActivity.this.getResources().getStringArray(R.array.send_img_item),
null, new MMAlert.OnAlertSelectId(){
@Override
public void onClick(int whichButton) {
switch(whichButton){
case MMAlertSelect1: {
break;
}
case MMAlertSelect2: {
break;
}
case MMAlertSelect3: {
break;
}
default:
break;
}
}
});
}
});
代码下载
http://download.****.net/detail/singwhatiwanna/5338394
下载地址二：