Android常用的AlertDialog對話框及自定義對話框
常用的Dialog有確認對話框,單選按鈕對話框,多選按鈕對話框,復選按鈕對話框另外還有自定義的對話框
AlertDialog的常用方法
setTitle:為對話框設置標題
setMessage:為對話框設置內(nèi)容
setIcon:為對話框設置圖標
setItems設置對話框要顯示的list
setMultiChoiceItems:一般用于復選框顯示
setSingleChoiceItem:,設置單選按鈕
setNeutralButton:普通按鈕
setPositiveButton:添加確定按鈕
setNegativeButton:添加取消按鈕
setView:設置自定義樣式
下面通過一個實例來了解這些方法
這是運行結(jié)果:

MainActivity.class
package com.example.alertdialog;
import android.R.bool;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.pm.LabeledIntent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private Button button1;
private Button button2;
private Button button3;
private Button button4;
private Button button5;
private int mark=0;
private String item[] = { "學生", "工人", "教師", "農(nóng)民" };
private String multChoice[]={"旅游","電影","運動","讀書"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button) findViewById(R.id.btn_button1);
button2 = (Button) findViewById(R.id.btn_button2);
button3 = (Button) findViewById(R.id.btn_button3);
button4 = (Button) findViewById(R.id.btn_button4);
button5 = (Button) findViewById(R.id.btn_button5);
button1.setOnClickListener(this);
button2.setOnClickListener(this);
button3.setOnClickListener(this);
button4.setOnClickListener(this);
button5.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
//確認對話框
case R.id.btn_button1: {
AlertDialog.Builder builder = new Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("確認對話框");
builder.setMessage("確認退出?");
builder.setPositiveButton("確定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "你單擊了確定按鈕",
Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "你單擊了取消按鈕",
Toast.LENGTH_SHORT).show();
}
});
builder.create();
builder.show();
break;
}
//列表對話框
case R.id.btn_button2: {
AlertDialog.Builder builder = new Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("職業(yè)");
builder.setItems(item, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "你的職業(yè)是" + item[which],
Toast.LENGTH_SHORT).show();
}
});
builder.create();
builder.show();
break;
}
//多選對話框
case R.id.btn_button3: {
final boolean choose[]=new boolean[multChoice.length];
AlertDialog.Builder builder = new Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("愛好");
builder.setMultiChoiceItems(multChoice, null, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// TODO Auto-generated method stub
choose[which]=isChecked;
}
});
builder.setPositiveButton("確認", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
String result="";
for(int i=0;i<multChoice.length;i++){
if(choose[i]){
result+=multChoice[i]+" ";
}
}
Toast.makeText(MainActivity.this, "你的愛好["+result+"]", Toast.LENGTH_SHORT).show();
}
});
builder.create();
builder.show();
break;
}
//單選對話框
case R.id.btn_button4: {
mark=0;
AlertDialog.Builder builder = new Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("職業(yè)");
builder.setSingleChoiceItems(item, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
mark=which;
}
});
builder.setPositiveButton("確定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "你的職業(yè):"+item[mark], Toast.LENGTH_SHORT).show();
}
});
builder.create();
builder.show();
break;
}
//自定義對話框
case R.id.btn_button5: {
LayoutInflater inflater=LayoutInflater.from(this);
View view=inflater.inflate(R.layout.item, null);
AlertDialog.Builder builder = new Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("自定義對話框");
builder.setView(view);
builder.setNeutralButton("普通按鈕", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this,"我是自定義的對話框哦",Toast.LENGTH_SHORT).show();
}
});
builder.create();
builder.show();
break;
}
}
}
}
布局文件
activity_main.xml
<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" 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" > <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical" > <Button android:id="@+id/btn_button1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="確認對話框" /> <Button android:id="@+id/btn_button2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="列表對話框" /> <Button android:id="@+id/btn_button3" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="多選對話框" /> <Button android:id="@+id/btn_button4" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="單選對話框" /> <Button android:id="@+id/btn_button5" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="自定義對話框" /> </LinearLayout> </RelativeLayout>
自定義的對話框布局文件
item.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:scaleType="fitCenter" android:src="@drawable/icon" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="我是自定義的對話框" /> </LinearLayout>
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