showDialog deprecated

最近在学习android，所以就注意到了showDialog这个函数在API 13以上就开始不支持了，所以就想找到新的使用方法，新的使用方法比喜欢使用showDialog复杂

现在就说一下解决方法吧。。。。

显示一个dialog有两种方法（我了解到了，有的可以想我补充）：

1.新建一个dialog,如AlertDialog.Builder，接着调用这个新建的dialog的show()方法显示即可，这个很简单

2.上面说到了方法，调用showDialog()方法，接着会调用到onCreateDialog()方法，这种方法是老的，新的方法是

（给出链接：http://developer.android.com/reference/android/app/DialogFragment.html#AlertDialog）

package com.example.first;import android.os.Bundle;import android.annotation.SuppressLint;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.app.DialogFragment;import android.content.DialogInterface;import android.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class Hello extends Activity {private String tag = "lifestyle";CharSequence[] item = {"Google","Apple","Microsoft"};boolean[] itemChecked = new boolean[item.length];    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_hello);        final Button button1 = (Button)findViewById(R.id.button1);        button1.setOnClickListener(new OnClickListener(){        public void onClick(View v)        {        showDialog();        }        });    }        @SuppressLint("NewApi")public static class MyAlertDialogFragment extends DialogFragment {        @SuppressLint("NewApi")public static MyAlertDialogFragment newInstance(int title) {            MyAlertDialogFragment frag = new MyAlertDialogFragment();            Bundle args = new Bundle();            args.putInt("title", title);            frag.setArguments(args);            return frag;        }    }        @SuppressLint("NewApi")void showDialog() {        DialogFragment newFragment = MyAlertDialogFragment.newInstance(0);        newFragment.show(getFragmentManager(), "dialog");    }    public void doPositiveClick() {        // Do stuff here.        Log.i("FragmentAlertDialog", "Positive click!");    }    public void doNegativeClick() {        // Do stuff here.        Log.i("FragmentAlertDialog", "Negative click!");    }    @Override    public Dialog onCreateDialog(Bundle savedInstanceState)//这里是按照android开发文档来写的，但是我这里是报错的？？？    {    int title = getArguments().getInt("title");    //switch(id){    //case 0:    return new AlertDialog.Builder(this)    .setIcon(R.drawable.ic_launcher)    .setTitle("Hello World")    .setPositiveButton("OK", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {Toast.makeText(getBaseContext(), "OK clicked", Toast.LENGTH_SHORT).show();}}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(getBaseContext(), "Cancel clicked", Toast.LENGTH_SHORT).show();}}).setMultiChoiceItems(item, itemChecked, new DialogInterface.OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which, boolean isChecked) {Toast.makeText(getBaseContext(), item[which]+(isChecked?"checked":"unchecked"), Toast.LENGTH_SHORT).show();}}).create();    //}    //return null;    }}