Android之Dialog详解
2016-05-11 15:16
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转载请注明出处:红亮的专栏:/article/1752805.html
Android中的对话框形式大致可分为五种:分别是一般对话框形式,列表对话框形式,单选按钮对话框,多选按钮对话框,自定义对话框。
在实际开发中,用系统的对话框会很少,因为太丑了,美工不愿意,多是使用自定义对话框。当然学会系统的,自定义就简单了,所以我们先来学习系统的,后面在写一篇自定义对话框。
不多说先上图:
![](http://img.blog.csdn.net/20150306140325734?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlhbmc1NjMw/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
private void dialog1(){
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { //设置确定按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss(); //关闭dialog
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { //设置取消按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNeutralButton("忽略", new DialogInterface.OnClickListener() {//设置忽略按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
}
});
//参数都设置完成了,创建并显示出来
builder.create().show();
}
说明:代码上注释已经比较全了,相信大家都能看得懂!dialog可以设置三个选择按钮,设置时指定按钮响应事件。
是不是觉得三个按钮写了三遍响应事件,很繁琐呢?注意:onClick的参数中有一个which,这个是什么意思呢?这个which实际上代表的是一个唯一的int型数值。像上面的setPositiveButton中的which代表的是-1,setNegativeButton中的which代表的是-3,setNeutralButton中的which代表的是-2.
到了这里相信大家已经想到怎么简洁的写法了,只要写一个响应事件,用which参数去区分是那个按钮就可以了!
看简洁的代码2:和上面的效果是一样的!
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
private void dialog1_1(){
//先new出一个监听器,设置好监听
DialogInterface.OnClickListener dialogOnclicListener=new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
switch(which){
case Dialog.BUTTON_POSITIVE:
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEGATIVE:
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEUTRAL:
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
break;
}
}
};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确认",dialogOnclicListener);
builder.setNegativeButton("取消", dialogOnclicListener);
builder.setNeutralButton("忽略", dialogOnclicListener);
builder.create().show();
}
![](http://img.blog.csdn.net/20150306141543210?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlhbmc1NjMw/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
private void dialog2() {
final String items[]={"张三","李四","王五"};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
//builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
//设置列表显示,注意设置了列表显示就不要设置builder.setMessage()了,否则列表不起作用。
builder.setItems(items,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
说明:列表对话框只需设置Items属性即可,注意不能在设置Message属性,否则只会显示Message,不会显示列表。这里的setItems中的Onclick中的which属性是items数组的下标!
![](http://img.blog.csdn.net/20150306142118406?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlhbmc1NjMw/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
private void dialog3(){
final String items[]={"男","女"};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setSingleChoiceItems(items,0,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
说明:其实也没什么好说的,和上面的差不多,只是设置单选用setSingleChoiceItems,注意这里的参数:items是显示的文本,0表示默认选中是第一个,如图所示是默认选中“男”。
![](http://img.blog.csdn.net/20150306142410382?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlhbmc1NjMw/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
private void dialog4(){
final String items[]={"篮球","足球","排球"};
final boolean selected[]={true,false,true};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setMultiChoiceItems(items,selected,new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// dialog.dismiss();
Toast.makeText(MainActivity.this, items[which]+isChecked, Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
//android会自动根据你选择的改变selected数组的值。
for (int i=0;i<selected.length;i++){
Log.e("hongliang",""+selected[i]);
}
}
});
builder.create().show();
}
说明:setMultiChoiceItems中的参数:selected是默认的对应的选中状态。当你选择时,系统会自动帮你把selected中的值做相应改变,所以在确定按钮中可以得到所有的选择状态。其他和单选一样。
总结:要想更好的使用对话框,自定义对话框是少不了的,当然啦,要和activity通信,回调也是少不了的,后面会详细介绍。不多说了,完整代码来一份:
MainActivity.java
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
package com.example.liang.dialogdemo;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity implements View.OnClickListener{
private Button btn1;
private Button btn2;
private Button btn3;
private Button btn4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1= (Button) findViewById(R.id.main_btn1);
btn1.setOnClickListener(this);
btn2= (Button) findViewById(R.id.main_btn2);
btn2.setOnClickListener(this);
btn3= (Button) findViewById(R.id.main_btn3);
btn3.setOnClickListener(this);
btn4= (Button) findViewById(R.id.main_btn4);
btn4.setOnClickListener(this);
}
private void dialog1(){
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { //设置确定按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss(); //关闭dialog
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { //设置取消按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNeutralButton("忽略", new DialogInterface.OnClickListener() {//设置忽略按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
}
});
//参数都设置完成了,创建并显示出来
builder.create().show();
}
private void dialog1_1(){
//先new出一个监听器,设置好监听
DialogInterface.OnClickListener dialogOnclicListener=new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
switch(which){
case Dialog.BUTTON_POSITIVE:
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEGATIVE:
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEUTRAL:
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
break;
}
}
};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确认",dialogOnclicListener);
builder.setNegativeButton("取消", dialogOnclicListener);
builder.setNeutralButton("忽略", dialogOnclicListener);
builder.create().show();
}
private void dialog2() {
final String items[]={"张三","李四","王五"};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
//builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
//设置列表显示,注意设置了列表显示就不要设置builder.setMessage()了,否则列表不起作用。
builder.setItems(items,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
private void dialog3(){
final String items[]={"男","女"};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setSingleChoiceItems(items,0,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
private void dialog4(){
final String items[]={"篮球","足球","排球"};
final boolean selected[]={true,false,true};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setMultiChoiceItems(items,selected,new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// dialog.dismiss();
Toast.makeText(MainActivity.this, items[which]+isChecked, Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
//android会自动根据你选择的改变selected数组的值。
for (int i=0;i<selected.length;i++){
Log.e("hongliang",""+selected[i]);
}
}
});
builder.create().show();
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.main_btn1:
// dialog1();
dialog1_1();//等同与上面的dialog1(),比之更简洁,推荐
break;
case R.id.main_btn2:
dialog2();
break;
case R.id.main_btn3:
dialog3();
break;
case R.id.main_btn4:
dialog4();
break;
}
}
}
布局文件:
[html] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<Button
android:id="@+id/main_btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="普通对话框" />
<Button
android:id="@+id/main_btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="列表对话框" />
<Button
android:id="@+id/main_btn3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="单选列表对话框" />
<Button
android:id="@+id/main_btn4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="多选列表对话框" />
</LinearLayout>
Android中的对话框形式大致可分为五种:分别是一般对话框形式,列表对话框形式,单选按钮对话框,多选按钮对话框,自定义对话框。
在实际开发中,用系统的对话框会很少,因为太丑了,美工不愿意,多是使用自定义对话框。当然学会系统的,自定义就简单了,所以我们先来学习系统的,后面在写一篇自定义对话框。
一般对话框:
不多说先上图:代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
private void dialog1(){
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { //设置确定按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss(); //关闭dialog
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { //设置取消按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNeutralButton("忽略", new DialogInterface.OnClickListener() {//设置忽略按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
}
});
//参数都设置完成了,创建并显示出来
builder.create().show();
}
说明:代码上注释已经比较全了,相信大家都能看得懂!dialog可以设置三个选择按钮,设置时指定按钮响应事件。
是不是觉得三个按钮写了三遍响应事件,很繁琐呢?注意:onClick的参数中有一个which,这个是什么意思呢?这个which实际上代表的是一个唯一的int型数值。像上面的setPositiveButton中的which代表的是-1,setNegativeButton中的which代表的是-3,setNeutralButton中的which代表的是-2.
到了这里相信大家已经想到怎么简洁的写法了,只要写一个响应事件,用which参数去区分是那个按钮就可以了!
看简洁的代码2:和上面的效果是一样的!
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
private void dialog1_1(){
//先new出一个监听器,设置好监听
DialogInterface.OnClickListener dialogOnclicListener=new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
switch(which){
case Dialog.BUTTON_POSITIVE:
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEGATIVE:
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEUTRAL:
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
break;
}
}
};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确认",dialogOnclicListener);
builder.setNegativeButton("取消", dialogOnclicListener);
builder.setNeutralButton("忽略", dialogOnclicListener);
builder.create().show();
}
列表对话框:
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
private void dialog2() {
final String items[]={"张三","李四","王五"};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
//builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
//设置列表显示,注意设置了列表显示就不要设置builder.setMessage()了,否则列表不起作用。
builder.setItems(items,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
说明:列表对话框只需设置Items属性即可,注意不能在设置Message属性,否则只会显示Message,不会显示列表。这里的setItems中的Onclick中的which属性是items数组的下标!
单选按钮对话框:
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
private void dialog3(){
final String items[]={"男","女"};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setSingleChoiceItems(items,0,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
说明:其实也没什么好说的,和上面的差不多,只是设置单选用setSingleChoiceItems,注意这里的参数:items是显示的文本,0表示默认选中是第一个,如图所示是默认选中“男”。
多选列表对话框:
代码:
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
private void dialog4(){
final String items[]={"篮球","足球","排球"};
final boolean selected[]={true,false,true};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setMultiChoiceItems(items,selected,new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// dialog.dismiss();
Toast.makeText(MainActivity.this, items[which]+isChecked, Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
//android会自动根据你选择的改变selected数组的值。
for (int i=0;i<selected.length;i++){
Log.e("hongliang",""+selected[i]);
}
}
});
builder.create().show();
}
说明:setMultiChoiceItems中的参数:selected是默认的对应的选中状态。当你选择时,系统会自动帮你把selected中的值做相应改变,所以在确定按钮中可以得到所有的选择状态。其他和单选一样。
总结:要想更好的使用对话框,自定义对话框是少不了的,当然啦,要和activity通信,回调也是少不了的,后面会详细介绍。不多说了,完整代码来一份:
MainActivity.java
[java] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
package com.example.liang.dialogdemo;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity implements View.OnClickListener{
private Button btn1;
private Button btn2;
private Button btn3;
private Button btn4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1= (Button) findViewById(R.id.main_btn1);
btn1.setOnClickListener(this);
btn2= (Button) findViewById(R.id.main_btn2);
btn2.setOnClickListener(this);
btn3= (Button) findViewById(R.id.main_btn3);
btn3.setOnClickListener(this);
btn4= (Button) findViewById(R.id.main_btn4);
btn4.setOnClickListener(this);
}
private void dialog1(){
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { //设置确定按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss(); //关闭dialog
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { //设置取消按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
}
});
builder.setNeutralButton("忽略", new DialogInterface.OnClickListener() {//设置忽略按钮
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
}
});
//参数都设置完成了,创建并显示出来
builder.create().show();
}
private void dialog1_1(){
//先new出一个监听器,设置好监听
DialogInterface.OnClickListener dialogOnclicListener=new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
switch(which){
case Dialog.BUTTON_POSITIVE:
Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEGATIVE:
Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();
break;
case Dialog.BUTTON_NEUTRAL:
Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();
break;
}
}
};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setPositiveButton("确认",dialogOnclicListener);
builder.setNegativeButton("取消", dialogOnclicListener);
builder.setNeutralButton("忽略", dialogOnclicListener);
builder.create().show();
}
private void dialog2() {
final String items[]={"张三","李四","王五"};
//dialog参数设置
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
//builder.setMessage("是否确认退出?"); //设置内容
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
//设置列表显示,注意设置了列表显示就不要设置builder.setMessage()了,否则列表不起作用。
builder.setItems(items,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
private void dialog3(){
final String items[]={"男","女"};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setSingleChoiceItems(items,0,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//dialog.dismiss();
Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
}
private void dialog4(){
final String items[]={"篮球","足球","排球"};
final boolean selected[]={true,false,true};
AlertDialog.Builder builder=new AlertDialog.Builder(this); //先得到构造器
builder.setTitle("提示"); //设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标,图片id即可
builder.setMultiChoiceItems(items,selected,new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// dialog.dismiss();
Toast.makeText(MainActivity.this, items[which]+isChecked, Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
//android会自动根据你选择的改变selected数组的值。
for (int i=0;i<selected.length;i++){
Log.e("hongliang",""+selected[i]);
}
}
});
builder.create().show();
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.main_btn1:
// dialog1();
dialog1_1();//等同与上面的dialog1(),比之更简洁,推荐
break;
case R.id.main_btn2:
dialog2();
break;
case R.id.main_btn3:
dialog3();
break;
case R.id.main_btn4:
dialog4();
break;
}
}
}
布局文件:
[html] view
plain copy
![](https://code.csdn.net/assets/CODE_ico.png)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<Button
android:id="@+id/main_btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="普通对话框" />
<Button
android:id="@+id/main_btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="列表对话框" />
<Button
android:id="@+id/main_btn3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="单选列表对话框" />
<Button
android:id="@+id/main_btn4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="多选列表对话框" />
</LinearLayout>
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