1.警告框
button.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
// 通過AlertDialog.Builder這個類來實例化我們的一個AlertDialog的對象
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
// 設置Title的圖標
builder.setIcon(R.drawable.ic_launcher);
// 設置Title的內容
builder.setTitle("彈出警告框");
// 設置Content來顯示一個信息
builder.setMessage("確定刪除嗎?");
// 設置一個PositiveButton
builder.setPositiveButton("確定", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "positive: " + which, Toast.LENGTH_SHORT).show();
}
});
// 設置一個NegativeButton
builder.setNegativeButton("取消", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "negative: " + which, Toast.LENGTH_SHORT).show();
}
});
// 設置一個NeutralButton
builder.setNeutralButton("忽略", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "neutral: " + which, Toast.LENGTH_SHORT).show();
}
});
// 顯示出該對話框
builder.show();
}
});
2.單選框
button3.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("請選擇性別");
final String[] sex = {"男", "女", "未知性別"};
// 設置一個單項選擇下拉框
/**
* 第一個參數指定我們要顯示的一組下拉單選框的數據集合
* 第二個參數代表索引,指定默認哪一個單選框被勾選上,1表示默認'女' 會被勾選上
* 第三個參數給每一個單選項綁定一個監聽器
*/
builder.setSingleChoiceItems(sex, 1, new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "性別爲:" + sex[which], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("確定", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
}
});
builder.show();
}
});
3.多選框
button4.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("愛好");
final String[] hobbies = {"籃球", "足球", "網球", "斯諾克"};
// 設置一個單項選擇下拉框
/**
* 第一個參數指定我們要顯示的一組下拉多選框的數據集合
* 第二個參數代表哪幾個選項被選擇,如果是null,則表示一個都不選擇,如果希望指定哪一個多選選項框被選擇,
* 需要傳遞一個boolean[]數組進去,其長度要和第一個參數的長度相同,例如 {true, false, false, true};
* 第三個參數給每一個多選項綁定一個監聽器
*/
builder.setMultiChoiceItems(hobbies, null, new DialogInterface.OnMultiChoiceClickListener()
{
StringBuffer sb = new StringBuffer(100);
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked)
{
if(isChecked)
{
sb.append(hobbies[which] + ", ");
}
Toast.makeText(MainActivity.this, "愛好爲:" + sb.toString(), Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("確定", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
}
});
builder.show();
}
});
4.對話框
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<EditText
android:id="@+id/username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="username"/>
<EditText
android:id="@+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/username"
android:hint="password"
android:inputType="textPassword"/>
</RelativeLayout>
button5.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("請輸入用戶名和密碼");
// 通過LayoutInflater來加載一個xml的佈局文件作爲一個View對象
View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog, null);
// 設置我們自己定義的佈局文件作爲彈出框的Content
builder.setView(view);
final EditText username = (EditText)view.findViewById(R.id.username);
final EditText password = (EditText)view.findViewById(R.id.password);
builder.setPositiveButton("確定", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
String a = username.getText().toString().trim();
String b = password.getText().toString().trim();
// 將輸入的用戶名和密碼打印出來
Toast.makeText(MainActivity.this, "用戶名: " + a + ", 密碼: " + b, Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
}
});
builder.show();
}
});