Android中AlertDialog四種對話框的最科學(xué)編寫用法(實(shí)例代碼)

更新時(shí)間：2019年11月25日 10:09:03 作者：Geeksongs

這篇文章主要介紹了Android中AlertDialog四種對話框的最科學(xué)編寫用法,本文通過代碼講解的非常詳細(xì)，具有一定的參考借鑒價(jià)值，需要的朋友可以參考下

首先我們上圖：

xml的代碼如下，用于編寫按鈕：

<?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:background="@drawable/background"
xmlns:widget="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">
  <Button
    android:id="@+id/button_1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="簡單的dialog"
    />
  <Button
    android:id="@+id/button_2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="列表的dialog"
    />
  <Button
    android:id="@+id/button_3"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="單選的dialog"
    />
  <Button
    android:id="@+id/button_4"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="多選的dialog"
    />
</LinearLayout>

Java代碼如下，用于實(shí)現(xiàn)邏輯：

import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity{
  int index;
  String [] item = {"Android","IOS","Spark","Hadoop","Web"};
  boolean[] bools = {false,false,false,false,false};
  // 設(shè)置boolean數(shù)組所有的選項(xiàng)設(shè)置默認(rèn)沒選
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
      actionBar.hide();
    }
    Button button=(Button)findViewById(R.id.button_1);
    button.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setIcon(R.drawable.girl);
        builder.setTitle("標(biāo)題欄");
        builder.setMessage("對話框內(nèi)容，可自行設(shè)置");
        builder.setPositiveButton("確定",new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            Toast.makeText(MainActivity.this, "點(diǎn)擊了確定", Toast.LENGTH_SHORT).show();
          }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(MainActivity.this, "點(diǎn)擊了取消", Toast.LENGTH_SHORT).show();
          }
        });
        builder.setNeutralButton("好的", new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(MainActivity.this, "點(diǎn)擊了“好的”", Toast.LENGTH_SHORT).show();
          }
        });
        AlertDialog alertDialog = builder.create();
        alertDialog.show();
      }
    });
    Button button2=(Button)findViewById(R.id.button_2);
    button2.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setTitle("請選擇一個(gè)技術(shù)分支");
        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();
      }
    });
    Button button3=(Button)findViewById(R.id.button_3);
    button3.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setTitle("請選擇技術(shù)分支：");
        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();
      }
    });
    Button button4=(Button)findViewById(R.id.button_4);
    button4.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setTitle("請選擇技術(shù)分支：");
        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();
      }
    });
  }
}

總結(jié)

以上所述是小編給大家介紹的Android中AlertDialog四種對話框的最科學(xué)編寫用法，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對腳本之家網(wǎng)站的支持！
如果你覺得本文對你有幫助，歡迎轉(zhuǎn)載，煩請注明出處，謝謝！

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