今天就跟大家聊聊有關(guān)在Android應(yīng)用中使用AlertDialog對話框可以實現(xiàn)哪些功能,可能很多人都不太了解,為了讓大家更加了解,小編給大家總結(jié)了以下內(nèi)容,希望大家根據(jù)這篇文章可以有所收獲。
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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(fù)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(shè)置標(biāo)題
setMessage:為對話框設(shè)置內(nèi)容
setIcon:為對話框設(shè)置圖標(biāo)
setItems設(shè)置對話框要顯示的list
setMultiChoiceItems:一般用于復(fù)選框顯示
setSingleChoiceItem:,設(shè)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(shè)置自定義樣式
下面通過一個實例來了解這些方法
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(xué)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>
看完上述內(nèi)容,你們對在Android應(yīng)用中使用AlertDialog對話框可以實現(xiàn)哪些功能有進一步的了解嗎?如果還想了解更多知識或者相關(guān)內(nèi)容,請關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道,感謝大家的支持。
當(dāng)前文章:在Android應(yīng)用中使用AlertDialog對話框可以實現(xiàn)哪些功能
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