Android 对对话框进行监听

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context="com.example.administrator.jreduch01.AlertActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/bt1"
android:text="对话框"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/bt2"
android:text="对话框单选"
android:layout_below="@id/bt1"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/bt3"
android:text="对话框多选"
android:layout_below="@id/bt2"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/bt4"
android:text="自定义对话框"
android:layout_below="@id/bt3"/>
</RelativeLayout>

对控件进行监听

package com.example.administrator.jreduch01;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class AlertActivity extends AppCompatActivity {
private Button bt1;
private Button bt2;
private Button bt3;
private Button bt4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_alert);
bt1=(Button)findViewById(R.id.bt1);
bt2=(Button)findViewById(R.id.bt2);
bt3=(Button)findViewById(R.id.bt3);
bt4=(Button)findViewById(R.id.bt4);
//设置对话框
bt1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder=
new AlertDialog.Builder(AlertActivity.this);
builder.setTitle("提示");
builder.setIcon(R.mipmap.ic_launcher);//建立图标
builder.setMessage("确定......吗？");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getBaseContext(), "点击了确定", Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getBaseContext(), "点击了取消", Toast.LENGTH_SHORT).show();
}
});
builder.setCancelable(false);//点击除了取消，确定外的按钮不能取消
AlertDialog alertDialog=builder.create();//生成提示框
alertDialog.show();//显示出来
}
});
//设置单选框
bt2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder=new AlertDialog.Builder(AlertActivity.this);
builder.setTitle("请选择");
builder.setIcon(R.mipmap.ic_launcher);
builder.setCancelable(false);//点击选项以外的地方对话框消失
final String[] items={"北京","上海","烟台"};
builder.setSingleChoiceItems(items, 1, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int i) {
Toast.makeText(getBaseContext(), items[i].toString(), Toast.LENGTH_SHORT).show();
dialog.dismiss();//点击后对话框消失
}
});
AlertDialog alertDialog=builder.create();
alertDialog.show();
}
});
//设置多选框
bt3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder=new AlertDialog.Builder(AlertActivity.this);
builder.setTitle("请选择");
builder.setIcon(R.mipmap.ic_lau
bff7
ncher);
final String[] items={"北京","上海","烟台","广州"};
final boolean[] choice={true,true,false,false};//final保持对它的引用
final boolean[] itemchoice=new boolean[items.length];
itemchoice[0]=true;
itemchoice[1]=true;
builder.setMultiChoiceItems(items, choice, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int i, boolean b) {
if (b) {
Toast.makeText(getBaseContext(), items[i].toString(), Toast.LENGTH_SHORT).show();
itemchoice[i] = true;
} else {
itemchoice[i] = false;
}
}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//建立一个循环实现选择内容的累加
String str = "";
for (int ch = 0; ch < items.length; ch++) {
str += (itemchoice[ch] == true) ? items[ch] : "";
}
Toast.makeText(getBaseContext(), str, Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
});
AlertDialog alertDialog=builder.create();
alertDialog.show();
}
});
//自定义布局
bt4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
View v=getLayoutInflater().inflate(R.layout.toast_layout,null);
ImageView iv=(ImageView)v.findViewById(R.id.toast_iv);
iv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getBaseContext(),"点击了图片",Toast.LENGTH_SHORT).show();
}
});
AlertDialog.Builder builder=new AlertDialog.Builder(AlertActivity.this);
builder.setView(v);
AlertDialog alertDialog=builder.create();
alertDialog.show();
}
});

}
}