xml代碼：

<?xml version='1.0' encoding='utf-8'?><LinearLayout xmlns:android='http://schemas.android.com/apk/res/android' xmlns:app='http://schemas.android.com/apk/res-auto' xmlns:tools='http://schemas.android.com/tools' android:layout_width='match_parent' android:layout_height='match_parent' android:orientation='vertical' tools:context='com.example.lesson7_3_id19_alertdialog.MainActivity'> <Buttonandroid:layout_width='match_parent'android:layout_height='wrap_content'android:text='簡單的dialog'android:onClick='dialog_1'/> <Buttonandroid:layout_width='match_parent'android:layout_height='wrap_content'android:text='列表的dialog'android:onClick='dialog_2'/> <Buttonandroid:layout_width='match_parent'android:layout_height='wrap_content'android:text='單選的dialog'android:onClick='dialog_3'/> <Buttonandroid:layout_width='match_parent'android:layout_height='wrap_content'android:text='多選的dialog'android:onClick='dialog_4'/> <Buttonandroid:layout_width='match_parent'android:layout_height='wrap_content'android:text='自定義View的dialog'android:onClick='dialog_5'/> <Buttonandroid:layout_width='match_parent'android:layout_height='wrap_content'android:text='使用adapter的dialog'android:onClick='dialog_6'/></LinearLayout>

java代碼：

package com.example.lesson7_3_id19_alertdialog;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.ArrayAdapter;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main); } public void dialog_1(View v){AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setIcon(R.mipmap.ic_launcher_round);builder.setTitle('標題欄');builder.setMessage('正文部分，簡單的文本');builder.setPositiveButton('確定',new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, '點擊了確定', Toast.LENGTH_SHORT).show(); }});builder.setNegativeButton('取消',null);builder.setNeutralButton('中立',null);AlertDialog alertDialog = builder.create();alertDialog.show(); } private String [] item = {'游戲','運動','電影','旅游','看書'}; public void dialog_2(View v){AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle('請選擇');builder.setItems(item, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, '選擇了'+item[which], Toast.LENGTH_SHORT).show(); }});// 取消可以不添加//builder.setNegativeButton('取消',null);AlertDialog alertDialog = builder.create();alertDialog.show(); } int index; public void dialog_3(View v){AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle('請選擇');builder.setSingleChoiceItems(item, index, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {index = which; }});builder.setPositiveButton('確定', new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, '選擇了'+item[index], Toast.LENGTH_SHORT).show(); }});builder.setNegativeButton('取消',null);AlertDialog alertDialog = builder.create();alertDialog.show(); } // 設置boolean數組所有的選項設置默認沒選 boolean[] bools = {false,false,false,false,false}; public void dialog_4(View v){AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle('請選擇');builder.setMultiChoiceItems(item, bools, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) {bools[which] = isChecked; }});builder.setPositiveButton('確定', new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {StringBuffer sb = new StringBuffer();for (int i = 0; i < item.length; i++) { if (bools[i]) { sb.append(item[i] + ' '); }}Toast.makeText(MainActivity.this, '選擇了' + sb.toString(), Toast.LENGTH_SHORT).show(); }});builder.setNegativeButton('取消',null);AlertDialog alertDialog = builder.create();alertDialog.show(); } public void dialog_5(View v){AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle('連接wifi');final EditText et = new EditText(this);et.setHint('請輸入密碼');et.setSingleLine(true);builder.setView(et);builder.setNegativeButton('取消',null);builder.setPositiveButton('確定', new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {String password = et.getText().toString();if (password.equals('123456')) { Toast.makeText(MainActivity.this, '連接成功', Toast.LENGTH_SHORT).show();}else{ Toast.makeText(MainActivity.this, '密碼錯誤', Toast.LENGTH_SHORT).show();} }});AlertDialog alertDialog = builder.create();alertDialog.show(); } public void dialog_6(View v){ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,item);AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle('使用適配器');builder.setAdapter(adapter, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, '選擇了'+item[which], Toast.LENGTH_SHORT).show(); }});AlertDialog alertDialog = builder.create();alertDialog.show(); }}

到此這篇關于Android AlertDialog的幾種用法詳解的文章就介紹到這了,更多相關Android AlertDialog方法內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！