测试代码：
布局：
activity_main.xml：
<LinearLayout 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:orientation="vertical"
tools:context="com.zzw.testalerdialog.MainActivity" > <Button
android:id="@+id/horizontally"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="横向显示" /> <Button
android:id="@+id/vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:paddingTop="20dp"
android:text="竖向显示" /> <Button
android:id="@+id/singleChoice"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:paddingTop="20dp"
android:text="单选框显示" /> <Button
android:id="@+id/multiChoice"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:paddingTop="20dp"
android:text="多选框显示" /> <Button
android:id="@+id/myDialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:paddingTop="20dp"
android:text="自定义显示" /> <ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="1"
android:src="@drawable/ic_launcher" /> </LinearLayout>
JAVA代码：
package com.zzw.testalerdialog; import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast; public class MainActivity extends Activity implements View.OnClickListener { private Context context; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); init();
} private void init() { context = this; findViewById(R.id.horizontally).setOnClickListener(this);
findViewById(R.id.vertical).setOnClickListener(this);
findViewById(R.id.singleChoice).setOnClickListener(this);
findViewById(R.id.multiChoice).setOnClickListener(this);
findViewById(R.id.myDialog).setOnClickListener(this); } // 横向类型显示
private void horizontallyShow() { AlertDialog dialog = new AlertDialog.Builder(context).create();
dialog.setIcon(R.drawable.ic_launcher);
dialog.setTitle("横向显示");
dialog.setMessage("提示信息");
// DialogInterface.BUTTON_POSITIVE作用是显示的顺序
dialog.setButton(DialogInterface.BUTTON_POSITIVE, "确定", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "确定", 0).show();
}
}); dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "取消", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "取消", 0).show();
}
}); dialog.setButton(DialogInterface.BUTTON_NEUTRAL, "考虑", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "考虑", 0).show();
}
}); dialog.show();
} // 竖向类型显示
private void verticalShow() { final String[] items = new String[3];
for (int i = 0; i < 3; i++) {
items[i] = "选项--" + i;
} AlertDialog dialog = new AlertDialog.Builder(context).setItems(items, new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) { Toast.makeText(context, items[which], Toast.LENGTH_SHORT).show();
}
}).create(); dialog.setTitle("竖向显示");
dialog.setIcon(R.drawable.ic_launcher); dialog.show(); } // 单选框类型显示
private void singleChoiceShow() { final String[] items = new String[3];
for (int i = 0; i < 3; i++) {
items[i] = "选项--" + i;
} AlertDialog.Builder mBuilder = new AlertDialog.Builder(context);
// mBuilder.setIcon(R.drawable.ic_launcher);
// mBuilder.setTitle("单选框显示"); // checkedItem默认选择的位置参数
mBuilder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, items[which], Toast.LENGTH_SHORT).show();
dialog.dismiss(); }
}); AlertDialog dialog = mBuilder.create();
dialog.setIcon(R.drawable.ic_launcher);
dialog.setTitle("单选框显示");
dialog.show(); } // 复选框类型显示
private void multiChoiceShow() { final String[] items = new String[3];
for (int i = 0; i < 3; i++) {
items[i] = "选项--" + i;
} AlertDialog.Builder mBuilder = new AlertDialog.Builder(context); // checkedItems为默认勾选的状态
final boolean[] checkedItems = { false, true, false };
// 这个监听的作用是用于检测item选中状态的变化
mBuilder.setMultiChoiceItems(items, checkedItems, new DialogInterface.OnMultiChoiceClickListener() { @Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) { }
}); AlertDialog dialog = mBuilder.create();
dialog.setIcon(R.drawable.ic_launcher);
dialog.setTitle("复选框显示"); // 用于确定，知道用户勾选了那些选项
dialog.setButton(DialogInterface.BUTTON_POSITIVE, "确定", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) { String s = "";
for (int i = 0; i < items.length; i++) {
if (checkedItems[i])
s += items[i] + "\n";
}
Toast.makeText(context, s, Toast.LENGTH_SHORT).show();
}
}); // 用于取消
dialog.setButton(DialogInterface.BUTTON_NEUTRAL, "取消", new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) { }
}); dialog.show();
} //自定义类型显示
private void myDialogShow(){ AlertDialog.Builder mBuilder = new AlertDialog.Builder(context); mBuilder.setView(getLayoutInflater().inflate(R.layout.my_dialog, null)); AlertDialog dialog=mBuilder.create();
// dialog.setIcon(R.drawable.ic_launcher);
// dialog.setTitle("自定义的对话框");
dialog.show();
} @Override
public void onClick(View v) { switch (v.getId()) {
case R.id.horizontally: horizontallyShow();
break;
case R.id.vertical: verticalShow();
break;
case R.id.singleChoice: singleChoiceShow();
break;
case R.id.multiChoice: multiChoiceShow();
break;
case R.id.myDialog:
myDialogShow();
break; }
} }
自定义的布局my_dialog.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#80CBC4"
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:layout_gravity="center_horizontal"
android:src="@drawable/ic_launcher" /> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="www.cnblogs.com/zzw1994"
android:textColor="@android:color/holo_red_light" /> </LinearLayout>