Android AlertDailog 應用

由mydialog1 複製過來，重新命名為mydialog2，並針對 com.example.mydialog1 
refactor 為 com.example.mydialog2。

在showDialog()函數中，定義字串陣列 String[] items = {"Android", "iOS", "Win8", "Other"}; 按下選單時觸發builder.setItems 函數，


builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {

}
})

詳細程式如下



package com.example.mydialog2;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.example.mydialog1.R;

public class MainActivity extends Activity {
private Button click1;
private TextView tv;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
click1=(Button) findViewById(R.id.click1);
click1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog();
}
});


}

private void showDialog()
{
AlertDialog dialog1;
AlertDialog.Builder builder=new AlertDialog.Builder(this);
String[] items = {"Android", "iOS", "Win8", "Other"};

builder.setTitle("請選擇");
builder.setCancelable(false);
builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "" + which, Toast.LENGTH_SHORT).show();
}
});
dialog1=builder.create();
dialog1.show();
}




@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}

}