Android 多种dialog的实现方法(推荐)

要求：设计如下界面，包括图片按钮、复选按钮、单选按钮、普通按钮，单击按钮弹出对话框，运行效果如下：

string.xml文件源代码：

<resources>
  <string name="app_name">多种弹出对话框</string>
  <string name="dialog_img">图片按钮</string>
  <string name="dialog_radio">单选按钮</string>
  <string name="dialog_box">复选按钮</string>
  <string name="close">关闭</string>
</resources>

布局文件源代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
 <ImageView
   android:id="@+id/img"
   android:layout_height="100dp"
   android:layout_width="100dp"
   android:src="@drawable/aa"/>
  <CheckBox
    android:id="@+id/Checkbox1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Chinese"/>
  <CheckBox
    android:id="@+id/Checkbox2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="English"
    android:checked="true"/>
  <Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="复选按钮确定"/>
  <RadioGroup
    android:id="@+id/radioGroup"
    android:orientation="horizontal"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <RadioButton
      android:id="@+id/male"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="male" />
    <RadioButton
      android:id="@+id/female"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:checked="true"
      android:text="female"/>
  </RadioGroup>
  <Button
    android:id="@+id/button2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="单选按钮确定"/>
</LinearLayout>

java文件源代码：

package com.example.shiyan1_4;
import android.app.Dialog;
import android.content.DialogInterface;
import android.preference.DialogPreference;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import static android.R.attr.id;
public class Shiyan1_4Activity extends AppCompatActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_shiyan1_4);
    ImageView img = (ImageView) findViewById(R.id.img);
    Button button1 = (Button) findViewById(R.id.button1);
    Button button2 = (Button) findViewById(R.id.button2);
    img.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        AlertDialog.Builder dialog1 = new AlertDialog.Builder(Shiyan1_4Activity.this);
        dialog1.setTitle(R.string.dialog_img)
            .setMessage("您点击了图片按钮！")
            .setNegativeButton(R.string.close, null)
            .create()
            .show();
      }
    });
    button1.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        AlertDialog.Builder dialog1 = new AlertDialog.Builder(Shiyan1_4Activity.this);
        String str1 = "";
        //获取复选按钮的值
        CheckBox Checkbox1 = (CheckBox)findViewById(R.id.Checkbox1);
        if(Checkbox1.isChecked()){
          str1 += Checkbox1.getText() + "is selected !";
        }
        CheckBox Checkbox2 = (CheckBox)findViewById(R.id.Checkbox2);
        if(Checkbox2.isChecked()){
          str1 += Checkbox2.getText() + " is selected !\n";
        }
        dialog1.setTitle(R.string.dialog_box)
            .setMessage(str1)
            .setNegativeButton(R.string.close, null)
            .create()
            .show();
      }
    });
    button2.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        AlertDialog.Builder dialog2 = new AlertDialog.Builder(Shiyan1_4Activity.this);
        String str2 = "";
        //获取单选按钮的值
        RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radioGroup);
        for (int i = 0; i <radioGroup.getChildCount(); i++){
          RadioButton radioButton = (RadioButton) radioGroup.getChildAt(i);
          if(radioButton.isChecked()){
            str2 += radioButton.getText() + " is selected !";
            break;
          }
        }
        dialog2.setTitle(R.string.dialog_radio)
            .setMessage(str2)
            .setNegativeButton(R.string.close, null)
            .create()
            .show();
      }
    });
  }
}

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