android控件弹出

❶ android Spinner控件 选择后为什么会自动弹到界面顶部

我今天也遇到这个问题了
开始以为当spinner在scrollview时 存在android版本兼容问题
于是改成了popupwindow 比spinner麻烦好多 页面有多个EditText用于弹出popupwindow展示不同的下拉数据 点击TextView要记录当前的EditText当点击popupwindow的列表项关闭popupwindow时要取到数据手动调用之前记录的EditText的setttext方法
而用spinner 这一切都是自动的
前面都是废话 结果用popupwindow实现完后还是一样 会自动滚动到顶部 这时才仔细分析问题原因
原来是在点击EditText(设置了clickable=true;focusable=false)弹出spinner/popupwindow时焦点在页面外的EditText上 ,于是关闭spinner/popupwindow时页面自动滚动到获取焦点的EditText
解决方法很简单 在focusable=false的EditText的点击事件里去掉焦点
if (getCurrentFocus()!=null) {
getCurrentFocus().clearFocus();
}

❷ Android实现一个弹出框.

AlertDialog正解。

Builder builder = new Builder(this);
builder.setTitle("");
builder.setIcon(R.drawable.icon);
builder.setView(View);//自己定义一个View，就可以放进去
builder.show();

或者用popupwindow
然后为popupwindow的背景设置透明度

❸ android开发中获取选中文字以及弹出框

只需要在Textview中增加android:textIsSelectable="true"即可长按弹出复制，如果要弹出对话框，那就要用Dialog，dialog的用法如下：
Android中，在Dialog中增加EditText需要使用view控件，也可参考附件源代码。
具体实现代码：
1.创建对象框
AlertDialog.Builder builder = new Builder(context);
builder.setTitle("请输入"); //设置对话框标题
builder.setIcon(android.R.drawable.btn_star); //设置对话框标题前的图标

2.创建EditText输入框
final EditText edit = new EditText(context);

3.将输入框赋值给Dialog,并增加确定取消按键
builder.setView(edit);
builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "你输入的是: " + edit.getText().toString(), Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "你点了取消", Toast.LENGTH_SHORT).show();
}
});

4.设置常用api，并show弹出
builder.setCancelable(true); //设置按钮是否可以按返回键取消,false则不可以取消
AlertDialog dialog = builder.create(); //创建对话框
dialog.setCanceledOnTouchOutside(true); //设置弹出框失去焦点是否隐藏,即点击屏蔽其它地方是否隐藏
dialog.show();

❹ android listvew 控件如何点击弹出上下文菜单

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android ="http://schemas.android.com/apk/res/android"
android:orientation ="vertical"
android:layout_width ="fill_parent"
android:layout_height ="fill_parent" >
<TextView
android:layout_width ="fill_parent"
android:layout_height ="wrap_content"
android:text ="Long-Press on of the Items in the list." />
<ListView android:id ="@+id/list_favorites"
android:layout_width ="fill_parent"
android:layout_height ="fill_parent" />
</LinearLayout>

代码：
package com.pop.projects;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity extends Activity {
// ===========================================================
// Final Fields
// ===========================================================
protected static final int CONTEXTMENU_DELETEITEM = 0;

// ===========================================================
// Fields
// ===========================================================

protected ListView mFavList;
protected ArrayList<Favorite> fakeFavs = new ArrayList<Favorite>();

// ===========================================================
// "Constructors"
// ===========================================================

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);

/* Add some items to the list the listview will be showing. */
fakeFavs.add(new Favorite("John", "nice guy"));
fakeFavs.add(new Favorite("Yasmin", "hot girl"));
fakeFavs.add(new Favorite("Jack", "cool guy"));

this.mFavList = (ListView) this.findViewById(R.id.list_favorites);
initListView();
}

private void refreshFavListItems() {
mFavList.setAdapter(new ArrayAdapter<Favorite>(this,
android.R.layout.simple_list_item_1, fakeFavs));
}

private void initListView() {
/* Loads the items to the ListView. */
refreshFavListItems();

/* Add Context-Menu listener to the ListView. */
mFavList.(new OnCreateContextMenuListener() {

public void onCreateContextMenu(ContextMenu conMenu, View view , ContextMenuInfo info) {
conMenu.setHeaderTitle("ContextMenu");
conMenu.add(0, 0, 0, "Delete this favorite!");

/* Add as many context-menu-options as you want to. */
}
});

mFavList.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(MainActivity.this, "111111111111", 200).show() ;
}
});
}

// ===========================================================
// Methods from SuperClass/Interfaces
// ===========================================================

@Override
public boolean onContextItemSelected(MenuItem aItem) {
ContextMenuInfo menuInfo = (ContextMenuInfo) aItem.getMenuInfo();

/* Switch on the ID of the item, to get what the user selected. */
switch (aItem.getItemId()) {
case CONTEXTMENU_DELETEITEM:
/* Get the selected item out of the Adapter by its position. */
Favorite favContexted = (Favorite) mFavList.getAdapter()
.getItem(0);
/* Remove it from the list.*/
fakeFavs.remove(favContexted);

refreshFavListItems();
return true; /* true means: "we handled the event". */
}
return false;
}

// ===========================================================
// Inner and Anonymous Classes
// ===========================================================

/** Small class holding some basic */
protected class Favorite {

protected String name;
protected String kindness;

protected Favorite(String name, String kindness) {
this.name = name;
this.kindness = kindness;
}

/** The ListView is going to display the toString() return-value! */
public String toString() {
return name + " (" + kindness + ")";
}

public boolean equals(Object o) {
return o instanceof Favorite && ((Favorite) o).name.compareTo(name) == 0;
}
}
}

❺ android怎么在自定义控件中弹出对话框!!!

直接new一个AlertDialog就可以了啊
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("111");
builder.setMessage("222");
final AlertDialog dialog = builder.create();
dialog.show();

❻ android的这种弹出菜单（窗口）怎么实现

可以用popupWindow
public class PopUpActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LayoutInflater inflater = LayoutInflater.from(this);
// 引入窗口配置文件
View view = inflater.inflate(R.layout.main2, null);
// 创建PopupWindow对象
final PopupWindow pop = new PopupWindow(view, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, false);
Button btn = (Button) findViewById(R.id.btn);
// 需要设置一下此参数，点击外边可消失
pop.setBackgroundDrawable(new BitmapDrawable());
//设置点击窗口外边窗口消失
pop.setOutsideTouchable(true);
// 设置此参数获得焦点，否则无法点击
pop.setFocusable(true);

}
}
popupWindow.showAsDropDown(v);让它出现在上方标题栏的下方
布局里可以写成listview，也可以写成死布局
还有就是ActionBar，但个人感觉ActionBar没有popupWindow灵活，反正我一般这种情况都会用popupWindow，看个人爱好

❼ android微信的评论弹出框用什么控件做的

实现对一个主题评论并显示评论列表,首先想到的是需要使用ListView控件,
下面是layout下的xml布局文件:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/list_selector"
android:orientation="horizontal"
android:padding="5dip" >
<LinearLayout
android:id="@+id/thumbnail"
android:layout_width="120dip"
android:layout_height="120dip"
android:layout_alignParentLeft="true"
android:layout_marginRight="5dip"
android:background="@drawable/image_bg"
android:padding="1dip" >
<ImageView
android:id="@+id/group_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerInside"
android:src="@drawable/right" />
</LinearLayout>
<TextView
android:id="@+id/group_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/thumbnail"
android:layout_toRightOf="@+id/thumbnail"
android:text="测试朋友圈评论功能"
android:textColor="#040404"
android:textSize="15sp"
android:textStyle="bold"
android:typeface="sans" />
<TextView
android:id="@+id/group_content"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/thumbnail"
android:text="狗狗见到蟒，冲过去照头上就舔"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#343434"
android:textSize="12sp" />
<ImageView
android:id="@+id/group_discuss_popup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/group_content"
android:layout_below="@+id/group_content"
android:background="@drawable/coment_pressed" />
<TextView
android:id="@+id/group_createtime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/TextView09"
android:layout_toLeftOf="@+id/group_discuss_popup"
android:gravity="right"
android:text="2014-08-24 15:45"
android:textColor="#10bcc9"
android:textSize="12sp"
android:textStyle="bold" />
<RelativeLayout
android:id="@+id/rl_bottom"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
<Button
android:id="@+id/group_discuss_submit"
android:layout_width="60dp"
android:layout_height="40dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:background="@drawable/chat_send_button_bg"
android:onClick="discussSubmit"
android:text="发送"
android:textSize="20sp" />
<EditText
android:id="@+id/group_discuss"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_toLeftOf="@id/group_discuss_submit"
android:hint="评论"
android:singleLine="true"
android:textSize="18sp" >
<requestFocus />
</EditText>
</RelativeLayout>
<ListView
android:id="@+id/group_discuss_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/group_discuss_popup"
android:layout_marginTop="14dp"
android:divider="#b5b5b5"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector" />
<TextView
android:id="@+id/TextView09"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/thumbnail"
android:layout_marginBottom="40dp"
android:layout_toRightOf="@+id/thumbnail"
android:text="时间:"
android:textColor="#040404"
android:textSize="12sp"
android:textStyle="bold"
android:typeface="sans" />
</RelativeLayout>

❽ android中如何在某个控件弹出菜单

你这是 menu 吧， 就是在 activity中有个
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
} 这个函数中就是 调用显示了R。menu。main菜单的类容出来，并且原屏幕会变暗

❾ 请问android下怎么实现长按某控件弹出选项框的效果

试着重写View,系统自带控件是没有点击其他地方取消的,肯定是要重写的,单纯用系统控件是不能实现的.点击弹出View后,背景变黑可以自己手动实现，然后在父控件内写触摸事件,当点击父控件后,隐藏弹出层,然后将屏幕颜色恢复即可