Android 簡單對話框 AlertDilaog 應用 (1)

package com.example.mydialog1;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
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;

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()
       {

@Overrid
        public void onClick(View v) {
// TODO Auto-generated method stub
showDialog();
}
});

}

private void showDialog()
{
AlertDialog dialog1;
AlertDialog.Builder builder=new  AlertDialog.Builder(this);
builder.setTitle("請選擇");
builder.setMessage("Delete");
builder.setCancelable(false);

// 選擇回答yes
builder.setPositiveButton("yes", new  DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "Yes", Toast.LENGTH_SHORT).show();
}
});

//選擇回答No
builder.setNegativeButton("no", new   DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "No", Toast.LENGTH_LONG).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;
}

}