1、創建AlertDialog.Builder對象
2、調用Builder對象的setTitle方法設置標題,setIcon方法設置圖標
3、調用Builder相關方法如setMessage方法、setItems方法、setSingleChoiceItems方法、setMultiChoiceItems方法、setAdapter方法、setView方法設置不同類型的對話框內容。
4、調用setPositiveButton、setNegativeButton、setNeutralButton設置多個按鈕
5、調用Builder對象的create()方法創建AlertDialog對象
6、調用AlertDialog對象的show()方法將對話框顯示出來
一、setMessage:設置對話框內容爲簡單文本內容
// 創建構建器
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// 設置參數
builder.setTitle("請做出選擇").setIcon(R.drawable.ic_launcher)
.setMessage("我美不美")
.setPositiveButton("美", new OnClickListener() {// 積極
@Override
public void onClick(DialogInterface dialog,
int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "恭喜你答對了", 0)
.show();
}
}).setNegativeButton("不美", new OnClickListener() {// 消極
@Override
public void onClick(DialogInterface dialog,
int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "一點也不老實", 0)
.show();
}
}).setNeutralButton("不知道", new OnClickListener() {// 中間級
@Override
public void onClick(DialogInterface dialog,
int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "快睜開眼瞅瞅", 0)
.show();
}
});
builder.create().show();
運行截圖:
二、setItem:設置文本框內容爲簡單列表項
// 創建數據
final String[] items = new String[] { "北京", "上海", "廣州", "深圳" };
// 創建對話框構建器
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// 設置參數
builder.setIcon(R.drawable.ic_launcher).setTitle("提示")
.setItems(items, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, items[which],
Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
運行截圖:三、setSingleChoiceItems()設置對話框內容爲單選列表項
// 創建數據
final String[] items = new String[] { "北京", "上海", "廣州", "深圳" };
// 創建對話框構建器
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// 設置參數
builder.setIcon(R.drawable.ic_launcher).setTitle("提示")
.setSingleChoiceItems(items, 0, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, items[which],
Toast.LENGTH_SHORT).show();
}
});
builder.create().show();
運行截圖:四、setMultiChoiceItems()設置對話框內容爲多選項列表
// 創建數據
final String[] items = new String[] { "北京", "上海", "廣州", "深圳" };
// 創建對話框構建器
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setIcon(R.drawable.ic_launcher)
.setTitle("提示")
.setMultiChoiceItems(items,
new boolean[] { true, true, false, false, false },
new OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which, boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked) {
Toast.makeText(MainActivity.this,
items[which], 0).show();
}
}
});
builder.create().show();
運行截圖:五、setAdapter()設置對話框內容爲自定義列表項(這裏是一個佈局)
// 創建數據
final String[] items = new String[] { "北京", "上海", "廣州", "深圳" };
// 創建對話框構建器
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("提示")
.setIcon(R.drawable.ic_launcher)
.setAdapter(
new ArrayAdapter<String>(MainActivity.this,
R.layout.item, R.id.tv, items),
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, items[which],
0).show();
}
});
builder.create().show();
運行截圖:六、setView()設置對話框爲自定義View
// 創建對話框構建器
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// 獲取佈局
View view2 = View.inflate(MainActivity.this, R.layout.login, null);
// 獲取佈局中的控件
final EditText username = (EditText) view2.findViewById(R.id.username);
final EditText password = (EditText) view2.findViewById(R.id.password);
final Button button = (Button) view2.findViewById(R.id.btn_login);
// 設置參數
builder.setTitle("Login").setIcon(R.drawable.ic_launcher)
.setView(view2);
// 創建對話框
final AlertDialog alertDialog = builder.create();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String uname = username.getText().toString().trim();
String psd = password.getText().toString().trim();
if (uname.equals("shenhua") && psd.equals("123456")) {
Toast.makeText(MainActivity.this, "登錄成功", 0).show();
}
Toast.makeText(MainActivity.this, "登錄失敗", 0).show();
alertDialog.dismiss();// 對話框消失
}
});
alertDialog.show();
運行截圖: