• View(视图)——单选、复选、自定义对话框

    一.单选对话框

    1.常规用法同一般对话框

    2.Builder方法：设置单选选项setSingleChoiceItems(选项数组，默认被选中的选项索引，点击监听器DialogInterface.OnClickListener())：

    onClick(DialogInterface dialog, int which)：①which表示哪一个选项被选中②关闭对话框dialog.dismiss();

     1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.hanqi.testapp2.TestActivity5"
11     android:orientation="vertical">
12  <Button
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:text="单选对话框"
16         android:onClick="bt2_OnClick"/>
17 </LinearLayout>
    单选对话框
     1 package com.hanqi.testapp2;
 2 
 3 import android.app.AlertDialog;
 4 import android.app.DatePickerDialog;
 5 import android.app.TimePickerDialog;
 6 import android.content.DialogInterface;
 7 import android.os.Bundle;
 8 import android.support.v7.app.AppCompatActivity;
 9 import android.view.View;
10 import android.widget.DatePicker;
11 import android.widget.EditText;
12 import android.widget.ImageView;
13 import android.widget.TimePicker;
14 import android.widget.Toast;
15 
16 import java.util.Calendar;
17 
18 public class TestActivity5 extends AppCompatActivity {
19 
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         super.onCreate(savedInstanceState);
23         setContentView(R.layout.activity_test5);
24     }
25 //单选对话框
26     public void bt2_OnClick(View v)
27     {
28         //final 可以使这个常量的生命周期延长到整个对象
29         final String [] str={"男","女"};
30         new AlertDialog.Builder(this)
31                 .setTitle("单选对话框")
32                 .setSingleChoiceItems(str, 0, new DialogInterface.OnClickListener() {
33                     @Override
34                     public void onClick(DialogInterface dialog, int which) {
35 
36                         Toast.makeText(TestActivity5.this, "which="+which+",选中的是"+str[which], Toast.LENGTH_SHORT).show();
37 
38                         //关闭对话框
39                         dialog.dismiss();
40                     }
41                 }).setCancelable(false)
42                 .show();
43     }
44 }
    单选对话框

    二.复选对话框

    1.常规用法同一般对话框

    2.Builder方法：设置复选选项  setMultiChoiceItems(复选选项数组，每个选项是否选中的数组，点击事件监听器OnMultiChoiceClickListener())：

    void onClick(DialogInterface dialog, int which, boolean isChecked)：①which  表示哪一个选项被点击②isChecked  表示是否被选中③改变每个选项是否选中数组内对应的值

     1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.hanqi.testapp2.TestActivity5"
11     android:orientation="vertical">
12  <Button
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:text="复选对话框"
16         android:onClick="bt3_OnClick"/>
17 </LinearLayout>
    复选对话框
     1 package com.hanqi.testapp2;
 2 
 3 import android.app.AlertDialog;
 4 import android.app.DatePickerDialog;
 5 import android.app.TimePickerDialog;
 6 import android.content.DialogInterface;
 7 import android.os.Bundle;
 8 import android.support.v7.app.AppCompatActivity;
 9 import android.view.View;
10 import android.widget.DatePicker;
11 import android.widget.EditText;
12 import android.widget.ImageView;
13 import android.widget.TimePicker;
14 import android.widget.Toast;
15 
16 import java.util.Calendar;
17 
18 public class TestActivity5 extends AppCompatActivity {
19 
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         super.onCreate(savedInstanceState);
23         setContentView(R.layout.activity_test5);
24     }
25 //复选对话框
26     public void bt3_OnClick(View v)
27     {
28         final String [] str={"宝马","奔驰","劳斯莱斯","宾利"};
29         final boolean[] ch={true,false,false,true};
30 
31         new AlertDialog.Builder(this)
32                 .setTitle("复选对话框")
33                 .setMultiChoiceItems(str, ch, new DialogInterface.OnMultiChoiceClickListener() {
34                     @Override
35                     public void onClick(DialogInterface dialog, int which, boolean isChecked) {
36 
37                         //改变对应数组项的选中状态
38                         ch[which]=isChecked;
39                     }
40                 })
41                 .setPositiveButton("确认", new DialogInterface.OnClickListener() {
42                     @Override
43                     public void onClick(DialogInterface dialog, int which) {
44 
45                         int i = 0;
46                         //获取最终的选中状态
47                         for (boolean b : ch) {
48                             Toast.makeText(TestActivity5.this, str[i] + "选中状态=" + (b ? "选中" : "未选中"), Toast.LENGTH_LONG).show();
49 
50                             i++;
51                         }
52 
53 
54                     }
55                 })
56                 .setNegativeButton("取消", null)
57                 .setCancelable(false)
58                 .show();
59     }
60 }
    复选对话框

    三.自定义对话框

    1.常规用法同一般对话框

    2.Builder方法：setView(View)：①用加载器加载layout文件：第一种方式：LayoutInflater layoutInflater=getLayoutInflater( );：layoutInflater.inflate( )

    第二种方式：View.inflate(context,Layout文件id, ViewGroup);

    ②纯java代码定义View

    3.获得Layout中的组件：调用容器的findViewById(id)：①加载了Layout文件的View②当前自定义对话框实例：在按钮的OnClick回调方法里，AlertDialog a1=(AlertDialog)dialog;

     1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.hanqi.testapp2.TestActivity5"
11     android:orientation="vertical">
12  <Button
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:text="自定义对话框"
16         android:onClick="bt4_OnClick"/>
17 </LinearLayout>
    自定义对话框
     1 package com.hanqi.testapp2;
 2 
 3 import android.app.AlertDialog;
 4 import android.app.DatePickerDialog;
 5 import android.app.TimePickerDialog;
 6 import android.content.DialogInterface;
 7 import android.os.Bundle;
 8 import android.support.v7.app.AppCompatActivity;
 9 import android.view.View;
10 import android.widget.DatePicker;
11 import android.widget.EditText;
12 import android.widget.ImageView;
13 import android.widget.TimePicker;
14 import android.widget.Toast;
15 
16 import java.util.Calendar;
17 
18 public class TestActivity5 extends AppCompatActivity {
19 
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         super.onCreate(savedInstanceState);
23         setContentView(R.layout.activity_test5);
24     }
25  //自定义对话框
26     public void bt4_OnClick(View v)
27     {
28         //1.layout文件加载器
29         //LayoutInflater layoutInflater=getLayoutInflater();
30 
31         //View view=layoutInflater.inflate(R.layout.dialoglayout, null);
32 
33         //2.view的静态方法
34         //View view=View.inflate(this, R.layout.dialoglayout, null);
35 
36         //3.java代码
37         ImageView view=new ImageView(this);
38 
39         view.setImageResource(R.drawable.xiao1);
40 
41         new AlertDialog.Builder(this)
42                 .setTitle("自定义对话框")
43                // .setView(R.layout.dialoglayout)
44                 .setView(view)
45 
46                 .setPositiveButton("确定", null)
47 
48                 .show();
49     }
50 }
    自定义对话框

    四.方法

    关闭 dismiss( );

    补充登陆、日期、时间对话框

     1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.hanqi.testapp2.TestActivity5"
11     android:orientation="vertical">
12  <Button
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:text="登陆对话框"
16         android:onClick="bt5_OnClick"/>
17 
18     <Button
19         android:layout_width="match_parent"
20         android:layout_height="wrap_content"
21         android:text="日期对话框"
22         android:onClick="bt6_OnClick"/>
23 
24     <Button
25         android:layout_width="match_parent"
26         android:layout_height="wrap_content"
27         android:text="时间对话框"
28         android:onClick="bt7_OnClick"/>
29 
30 </LinearLayout>
    登陆、日期、时间对话框
     1 package com.hanqi.testapp2;
 2 
 3 import android.app.AlertDialog;
 4 import android.app.DatePickerDialog;
 5 import android.app.TimePickerDialog;
 6 import android.content.DialogInterface;
 7 import android.os.Bundle;
 8 import android.support.v7.app.AppCompatActivity;
 9 import android.view.View;
10 import android.widget.DatePicker;
11 import android.widget.EditText;
12 import android.widget.ImageView;
13 import android.widget.TimePicker;
14 import android.widget.Toast;
15 
16 import java.util.Calendar;
17 
18 public class TestActivity5 extends AppCompatActivity {
19 
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         super.onCreate(savedInstanceState);
23         setContentView(R.layout.activity_test5);
24     }
25  //登录对话框
26     public void bt5_OnClick(View v)
27     {
28         //加载layout文件
29         final View view=View.inflate(this,R.layout.dialog_login,null);
30 
31         AlertDialog a1=new AlertDialog.Builder(this)
32                 .setTitle("登录对话框")
33                 .setView(view)
34                 .setPositiveButton("登陆", new DialogInterface.OnClickListener() {
35                     @Override
36                     public void onClick(DialogInterface dialog, int which) {
37 
38                         //转换
39                         AlertDialog a1=(AlertDialog)dialog;
40 
41                         //获取输入信息
42                         EditText et_1=(EditText)view.findViewById(R.id.et_1);
43 
44                         Toast.makeText(TestActivity5.this, "用户名="+et_1.getText(), Toast.LENGTH_SHORT).show();
45 
46                         //验证并提示
47                     }
48                 }).setNegativeButton("取消",null)
49                 .show();
50     }
51 
52 
53     //当前日期 日历
54 
55     //单例模式
56     Calendar c=Calendar.getInstance();
57 
58 
59     //日期
60     public void bt6_OnClick(View v)
61     {
62 
63 
64 
65 
66         DatePickerDialog dp=new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
67             @Override
68             public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
69 
70                 Toast.makeText(TestActivity5.this, year+"-"+(monthOfYear+1)+"-"+dayOfMonth, Toast.LENGTH_SHORT).show();
71             }
72         }, c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DATE));
73 
74         dp.setCancelable(false);
75 
76         dp.show();
77     }
78 
79     //时间
80     public void bt7_OnClick(View v)
81     {
82         TimePickerDialog tp=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
83             @Override
84             public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
85 
86                 Toast.makeText(TestActivity5.this, hourOfDay+":"+minute, Toast.LENGTH_SHORT).show();
87             }
88         }, c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE), true);
89 
90         tp.setCanceledOnTouchOutside(false);
91 
92         tp.show();
93     }
94 
95 }
    登陆、日期、时间对话框

     

     
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  • 原文地址：https://www.cnblogs.com/cycanfly/p/5491055.html
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