首页 > 代码库 > 安卓ViewPager中Button点击事件弹出Dialog
安卓ViewPager中Button点击事件弹出Dialog
首先页面采用ViewPager，在第一个页面中有一个按钮，要求点击这个页面上的按钮弹出一个对话框。
先贴出效果图：
分析难点：1、在ViewPager中，共有四个选项卡页，找到第一个页面中Button按钮。先贴出代码：
1 package com.example.acountrecorder; 2 import java.util.ArrayList; 3 import java.util.HashMap; 4 import java.util.List; 5 import com.example.adapter.MyPagerAdapter; 6 import com.example.entity.DishesMenu; 7 import com.example.service.MenuService; 8 import android.app.Activity; 9 import android.app.AlertDialog; 10 import android.content.DialogInterface; 11 import android.os.Bundle; 12 import android.support.v4.view.ViewPager; 13 import android.support.v4.view.ViewPager.OnPageChangeListener; 14 import android.view.LayoutInflater; 15 import android.view.Menu; 16 import android.view.View; 17 import android.view.View.OnClickListener; 18 import android.view.ViewGroup; 19 import android.widget.Button; 20 import android.widget.ListView; 21 import android.widget.RadioButton; 22 import android.widget.RadioGroup; 23 import android.widget.SimpleAdapter; 24 import android.widget.RadioGroup.OnCheckedChangeListener; 25 import android.widget.Toast; 26 27 public class MainActivity extends Activity { 28 29 private Button btnMoney,adddish; 30 private RadioButton dishes,choosedishbyhand,choosedishrandom,payrecorder; 31 private RadioGroup radioGroup; 32 private ListView listView; 33 private SimpleAdapter simpleAdapter; 34 private ViewPager vpager; 35 private int currIndex=0; 36 private ArrayList<View> listViews; 37 38 @Override 39 protected void onCreate(Bundle savedInstanceState) { 40 super.onCreate(savedInstanceState); 41 setContentView(R.layout.activity_main); 42 43 init(); 44 InitViewPager(); 45 doSthRelative(); 46 setAction(); 47 } 48 49 private void setAction() { 50 if (currIndex==0) { 51 //下面两句诗关键！！！！ 52 View view1 = listViews.get(currIndex); 53 adddish = (Button) view1.findViewById(R.id.adddish); 54 adddish.setOnClickListener(new OnClickListener() { 55 @Override 56 public void onClick(View v) { 57 LayoutInflater inflater = getLayoutInflater(); 58 View layout = inflater.inflate(R.layout.dialog_adddish, 59 (ViewGroup) findViewById(R.id.dialog_dish)); 60 61 new AlertDialog.Builder(MainActivity.this).setTitle("").setView(layout).setPositiveButton("确定", 62 new DialogInterface.OnClickListener() { 63 @Override 64 public void onClick(DialogInterface dialog, int which) { 65 // TODO Auto-generated method stub 66 Toast.makeText(MainActivity.this, "dialog弹出来的", Toast.LENGTH_SHORT).show(); 67 } 68 } 69 70 ).setNegativeButton("取消", null).show(); 71 } 72 73 }); 74 } 75 76 } 77 78 private void init() { 79 btnMoney = (Button) findViewById(R.id.btn_money); 80 radioGroup = (RadioGroup) findViewById(R.id.radiogroup_item); 81 dishes = (RadioButton) findViewById(R.id.disheschoice); 82 choosedishbyhand = (RadioButton) findViewById(R.id.choosedishbyhand); 83 choosedishrandom = (RadioButton) findViewById(R.id.choosedishrandom); 84 payrecorder = (RadioButton) findViewById(R.id.paymentrecord); 85 //listView = (ListView) findViewById(R.id.checkdishes); 86 radioGroup.setOnCheckedChangeListener(rdgcc); 87 vpager = (ViewPager) findViewById(R.id.vPager); 88 } 89 90 private RadioGroup.OnCheckedChangeListener rdgcc = new OnCheckedChangeListener() { 91 92 @Override 93 public void onCheckedChanged(RadioGroup group, int checkedId) { 94 int r1 = dishes.getId(),r2 = choosedishbyhand.getId(),r3 = choosedishrandom.getId(),r4 = payrecorder.getId(); 95 if (r1==checkedId) { 96 Toast.makeText(MainActivity.this, dishes.getText().toString(), Toast.LENGTH_SHORT).show(); 97 currIndex = 0; 98 vpager.setCurrentItem(currIndex);//加载完页面后再加载页面上的元素 99 //adddish = (Button) findViewById(R.id.adddish);100 }else if (r2==checkedId) {101 Toast.makeText(MainActivity.this, choosedishbyhand.getText().toString(), Toast.LENGTH_SHORT).show();102 currIndex = 1;103 vpager.setCurrentItem(currIndex);104 }else if (r3==checkedId) {105 Toast.makeText(MainActivity.this, choosedishrandom.getText().toString(), Toast.LENGTH_SHORT).show();106 currIndex = 2;107 vpager.setCurrentItem(currIndex);108 }else if (r4==checkedId) {109 Toast.makeText(MainActivity.this, payrecorder.getText().toString(), Toast.LENGTH_SHORT).show();110 currIndex = 3;111 vpager.setCurrentItem(currIndex);112 } 113 }114 };115 116 private void InitViewPager() {117 vpager = (ViewPager) findViewById(R.id.vPager);118 listViews = new ArrayList<View>();119 LayoutInflater mInflater = getLayoutInflater();120 listViews.add(mInflater.inflate(R.layout.mydishes, null));121 listViews.add(mInflater.inflate(R.layout.chosdishhandly, null));122 listViews.add(mInflater.inflate(R.layout.chosdishrandom, null));123 listViews.add(mInflater.inflate(R.layout.recorders, null));124 vpager.setAdapter(new MyPagerAdapter(listViews));125 vpager.setCurrentItem(0);126 vpager.setOnPageChangeListener(new OnPageChangeListener() {127 @Override128 public void onPageSelected(int arg0) {129 switch (arg0) {130 case 0:131 dishes.setChecked(true);132 break;133 case 1:134 choosedishbyhand.setChecked(true);135 break;136 case 2:137 choosedishrandom.setChecked(true);138 break;139 case 3:140 payrecorder.setChecked(true);141 break;142 143 default:144 break;145 }146 }147 @Override148 public void onPageScrolled(int arg0, float arg1, int arg2) {149 }150 @Override151 public void onPageScrollStateChanged(int arg0) {152 }153 });154 } 155 private void doSthRelative(){156 if (currIndex==0) {157 //首先查询数据库中是否有数据，有数据则加载数据158 listView = (ListView)findViewById(R.id.allmydishes);159 ArrayList<HashMap<String, Object>> listMap = new ArrayList<HashMap<String, Object>>();160 DishesMenu dish = new DishesMenu();161 MenuService menuService = new MenuService(MainActivity.this);162 List<DishesMenu> listMenu = menuService.queryAll();163 if (listMenu!=null) {164 for (int i = 0; i < listMenu.size(); i++) {165 dish = listMenu.get(i);166 HashMap<String, Object> map = new HashMap<String, Object>();167 map.put("dishname", dish.getDishname());168 map.put("dishprice", dish.getDishprice());169 listMap.add(map);170 }171 simpleAdapter = new SimpleAdapter(this,listMap, R.layout.checkdisheslistviewitem, new String[]{"dishname","dishprice"}, new int[]{R.id.display_dishname,R.id.display_dishprice});172 listView.setAdapter(simpleAdapter);173 }174 175 }176 177 } 178 @Override179 public boolean onCreateOptionsMenu(Menu menu) {180 // Inflate the menu; this adds items to the action bar if it is present.181 getMenuInflater().inflate(R.menu.main, menu);182 return true;183 }184 185 }
其次是activitymain.xml代码：
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" 6 android:background="#FFFFFFFF" > 7 8 <RelativeLayout 9 android:layout_width="match_parent"10 android:layout_height="50dip"11 android:background="#FF333333" >12 <TextView13 android:layout_width="wrap_content"14 android:layout_height="wrap_content"15 android:layout_centerInParent="true"16 android:text="@string/title"17 android:textColor="#FFFFFFFF"18 android:textSize="20sp" />19 <Button20 android:layout_width="40dip"21 android:layout_height="40dip"22 android:id="@+id/btn_money"23 android:layout_centerInParent="true"24 android:layout_alignParentRight="true"25 android:layout_marginRight="20dip"26 android:background="@drawable/moneypackage" />27 </RelativeLayout>28 29 <RadioGroup 30 android:id="@+id/radiogroup_item"31 android:layout_width="wrap_content"32 android:layout_height="40dip"33 android:orientation="horizontal">34 <RadioButton android:id="@+id/disheschoice"35 android:layout_width="wrap_content"36 android:layout_height="40dip"37 android:layout_weight="1"38 android:background="@drawable/rb_bg"39 android:button="@null"40 android:checked="true"41 android:gravity="center"42 android:text="@string/dishestochoose"43 android:textColor="#FFFFFFFF"44 android:textSize="18sp"45 android:textStyle="bold"46 />47 <RadioButton android:id="@+id/choosedishbyhand"48 android:layout_width="wrap_content"49 android:layout_height="40dip"50 android:layout_weight="1"51 android:background="@drawable/rb_bg"52 android:button="@null"53 android:checked="false"54 android:gravity="center"55 android:text="@string/choosedishbyhand"56 android:textColor="#FFFFFFFF"57 android:textSize="18sp"58 android:textStyle="bold"59 />60 <RadioButton android:id="@+id/choosedishrandom"61 android:layout_width="wrap_content"62 android:layout_height="40dip"63 android:layout_weight="1"64 android:background="@drawable/rb_bg"65 android:button="@null"66 android:checked="false"67 android:gravity="center"68 android:text="@string/choosedishrandom"69 android:textColor="#FFFFFFFF"70 android:textSize="18sp"71 android:textStyle="bold"72 />73 <RadioButton android:id="@+id/paymentrecord"74 android:layout_width="wrap_content"75 android:layout_height="40dip"76 android:layout_weight="1"77 android:background="@drawable/rb_bg"78 android:button="@null"79 android:checked="false"80 android:gravity="center"81 android:text="@string/paymentrecord"82 android:textColor="#FFFFFFFF"83 android:textSize="18sp"84 android:textStyle="bold"85 /> 86 </RadioGroup>87 <android.support.v4.view.ViewPager88 android:layout_width="wrap_content"89 android:layout_height="wrap_content"90 android:id="@+id/vPager"91 android:layout_gravity="center"92 android:background="#000000"93 android:flipInterval="30"94 android:persistentDrawingCache="animation"95 />96 97 </LinearLayout>
第一个选项卡页面：
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" 6 android:background="#FFFF1565" 7 android:paddingBottom="@dimen/activity_vertical_margin" 8 tools:context=".MainActivity" > 9 10 11 <ListView 12 android:layout_width="match_parent"13 android:layout_height="340dip"14 android:id="@+id/allmydishes"15 android:layout_marginTop="10dip"16 >17 18 </ListView>19 <Button 20 android:layout_width="50dip"21 android:layout_height="50dip"22 android:background="@drawable/btn_add"23 android:gravity="bottom"24 android:id="@+id/adddish"25 android:layout_marginTop="20dip"26 android:layout_marginLeft="40dip"27 />28 </LinearLayout>
还有dialog.xml页面：
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" 6 android:id="@+id/dialog_dish" 7 android:background="#00000000" > 8 9 <LinearLayout 10 android:layout_width="match_parent"11 android:layout_height="wrap_content"12 android:layout_marginLeft="10dip"13 android:orientation="horizontal">14 <TextView 15 android:layout_width="wrap_content"16 android:layout_height="wrap_content"17 android:text="@string/diahname"18 android:textColor="#FFFFFFFF"19 android:textSize="16sp">20 </TextView>21 <EditText 22 android:layout_width="200dip"23 android:layout_height="wrap_content"24 android:layout_marginLeft="10dip"25 android:inputType="text"26 android:textSize="16sp"27 android:id="@+id/dish_addnewname"/>28 </LinearLayout> 29 <LinearLayout 30 android:layout_width="match_parent"31 android:layout_height="wrap_content"32 android:layout_marginLeft="10dip"33 android:orientation="horizontal">34 <TextView 35 android:layout_width="wrap_content"36 android:layout_height="wrap_content"37 android:text="@string/diahprice"38 android:textColor="#FFFFFFFF"39 android:textSize="16sp">40 </TextView>41 <EditText 42 android:layout_width="200dip"43 android:layout_height="wrap_content"44 android:layout_marginLeft="10dip"45 android:inputType="text"46 android:textSize="16sp"47 android:id="@+id/dish_addnewprice"/>48 </LinearLayout> 49 </LinearLayout>
难点分析：2、AlertDialog的用法，详细查看AndroidAPI。
安卓ViewPager中Button点击事件弹出Dialog
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