學習對話框Dialog
1.提示對話框
2.普通列表對話框
3. 單選對話框
4. 多選對話框
5.自定義視圖對話框
MainAcitivity.java
package com.example.dialog;
import android.R.anim;
import android.R.layout;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity implements android.view.View.OnClickListener{
private Button btn1;
private Button btn2;
private Button btn3;
private Button btn4;
private Button btn5;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button) findViewById(R.id .button1); //獲取Button
btn1.setOnClickListener(this); //設置單擊事件
btn2 = (Button) findViewById(R.id .button2); //獲取Button
btn2.setOnClickListener(this); //設置單擊事件
btn3 = (Button) findViewById(R.id .button3); //獲取Button
btn3.setOnClickListener(this); //設置單擊事件
btn4 = (Button) findViewById(R.id .button4); //獲取Button
btn4.setOnClickListener(this); //設置單擊事件
btn5 = (Button) findViewById(R.id .button5); //獲取Button
btn5.setOnClickListener(this); //設置單擊事件
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button1:
createAlertDialog1();
break;
case R.id.button2:
createAlertDialog2();
break;
case R.id.button3:
createAlertDialog3();
break;
case R.id.button4:
createAlertDialog4();
break;
case R.id.button5:
createAlertDialog5();
break;
default:
break;
}
}
//自定義視圖對話框
private void createAlertDialog5() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("登錄");
builder.setIcon(android.R.drawable.ic_dialog_info);
//設置自定義視圖
LayoutInflater inflater = getLayoutInflater(); //佈局填充器
// LayoutInflater inflater = LayoutInflater.from(this);
//實例化佈局組件
final View view = inflater.inflate(R.layout.login,null); //view 相當於LinearLayout
builder.setView(view);
builder.setPositiveButton("登錄", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
EditText et_username = (EditText)view.findViewById(R.id.editText1_username);
EditText et_password = (EditText)view.findViewById(R.id.editText2_password);
String username = et_username.getText().toString();
String password = et_password.getText().toString();
Toast.makeText(MainActivity.this, username+"--"+password, Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
//中立按鈕
builder.setNeutralButton("隱藏", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
builder.show();
}
//多選對話框
private void createAlertDialog4() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final String[] names = {"蘋果","草莓"};
builder.setTitle("選幾個吧");
//參數（數據列表，默認選中的選項null表示沒有，事件處理）
builder.setMultiChoiceItems(names, null, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
java.lang.System.out.println("which:"+which);
java.lang.System.out.println("isChecked:"+isChecked);
}
});
builder.show();
}
//單選對話框
private void createAlertDialog3() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final String[] names = {"蘋果","草莓"};
builder.setTitle("選擇一個");
//參數（數據列表，默認選中索引-1表示沒有選中，事件處理）
builder.setSingleChoiceItems(names, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int arg1) {
Toast.makeText(MainActivity.this, names[arg1], Toast.LENGTH_LONG).show();
//關閉對話框
dialog.dismiss();
// dialog.cancel();
}
});
builder.show();
}
//創建普通列表選擇的對話框
private void createAlertDialog2() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final String[] names = {"蘋果","草莓"};
builder.setTitle("選擇一個");
//設置選項列表
builder.setItems(names, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, names[which], Toast.LENGTH_LONG).show();
}
});
builder.show();
}
//創建一個提示信息的對話框
private void createAlertDialog1() {
//創建一個AlertDialog的建構對象
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("刪除");//設置標題
builder.setMessage("你真的要刪除嗎");//提示信息
//設置對話框不能被取消
builder.setCancelable(false);
//設置正面按鈕
builder.setPositiveButton("確定",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1) {
//單擊確定後的事件處理
Toast.makeText(MainActivity.this, "已刪除", Toast.LENGTH_LONG).show();
}
});
//設置反面按鈕
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "操作已取消", Toast.LENGTH_LONG).show();
}
});
//顯示對話框
builder.show();
}
}
