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() {

@Override
public void onClick(DialogInterface arg0, int arg1) {
Toast.makeText(getBaseContext(), "OK clicked", Toast.LENGTH_SHORT).show();
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getBaseContext(), "Cancel clicked", Toast.LENGTH_SHORT).show();
}
})
.setMultiChoiceItems(item, itemChecked, new DialogInterface.OnMultiChoiceClickListener() {

@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
Toast.makeText(getBaseContext(), item[which]+(isChecked?"checked":"unchecked"), Toast.LENGTH_SHORT).show();
}
}).create();
    //}
    //return null;
    }
}