启动自定义对话框

<RelativeLayout xmlns:android=\"http://schemas.android.com/apk/res/android\" android:id=\"@+id/relativeLayout1\" android:gravity=\"center_vertical\" android:layout_height=\"wrap_content\" android:layout_width=\"fill_parent\">
<CheckBox android:layout_height=\"wrap_content\" android:layout_width=\"wrap_content\" android:text=\"@string/chkBlueTooth\" android:id=\"@+id/chkBlueTooth\" android:layout_below=\"@+id/chkAudio\" android:layout_alignLeft=\"@+id/chkAudio\"></CheckBox>
<Button android:layout_height=\"wrap_content\" android:layout_width=\"wrap_content\" android:layout_below=\"@+id/chkBlueTooth\" android:layout_alignLeft=\"@+id/chkBlueTooth\" android:id=\"@+id/btnOK\" android:text=\"@string/btnOK\"></Button>
<CheckBox android:layout_height=\"wrap_content\" android:layout_width=\"wrap_content\" android:text=\"@string/chkNetwork\" android:id=\"@+id/chkNetwork\" android:layout_above=\"@+id/chkBlueTooth\" android:layout_toRightOf=\"@+id/chkBlueTooth\"></CheckBox>
<CheckBox android:layout_height=\"wrap_content\" android:layout_width=\"wrap_content\" android:text=\"@string/chkWifi\" android:id=\"@+id/chkWifi\" android:layout_below=\"@+id/chkNetwork\" android:layout_alignLeft=\"@+id/chkNetwork\" android:layout_alignRight=\"@+id/chkNetwork\"></CheckBox>
<CheckBox android:layout_height=\"wrap_content\" android:layout_width=\"wrap_content\" android:text=\"@string/chkAudio\" android:id=\"@+id/chkAudio\" android:layout_below=\"@+id/txtChoose\" android:layout_alignLeft=\"@+id/txtChoose\"></CheckBox>
</RelativeLayout>

        case POWER_OFF_OPTIONS:
            AlertDialog.Builder builder;
            AlertDialog alertDialog;

            Context mContext = getApplicationContext();
            LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
            View layout = inflater.inflate(R.layout.options,
                    (ViewGroup)findViewById(R.id.relativeLayout1));
            //Capture view elements
            mChkAudio = (CheckBox) findViewById(R.id.chkAudio);
            mChkBluetooth = (CheckBox) findViewById(R.id.chkBlueTooth);
            mChkNetwork = (CheckBox) findViewById(R.id.chkNetwork);
            mChkWifi = (CheckBox) findViewById(R.id.chkWifi);
            mBtnOK = (Button) findViewById(R.id.btnOK);
            mBtnOK.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                  DismissPowerOptions();
                    }
            }); 
            builder = new AlertDialog.Builder(mContext);
            builder.setView(layout);
            alertDialog = builder.create();
            //return builder;
        default:
            dialog = null;
        }
        return dialog;
    }

  mBtnPowerOffOptions.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            //stuff for Options dialog
            showDialog(POWER_OFF_OPTIONS);
        }
    });