Android 中LayoutInflater的使用

package com.android.tutor;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
public class LayoutInflaterDemo extends Activity implements
OnClickListener {

private Button button;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

button =(Button)findViewById(R.id.button);
button.setOnClickListener(this);
}
@Override
public void onClick(View v) {

showCustomDialog();
}

public void showCustomDialog()
{
AlertDialog.Builder builder;
AlertDialog alertDialog;
Context mContext =LayoutInflaterDemo.this;

//下面俩种方法都可以

========================================核心代码======================================
////LayoutInflater inflater =getLayoutInflater();

LayoutInflater inflater =(LayoutInflater) mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout =inflater.inflate(R.layout.custom_dialog,null);

TextView text = (TextView)layout.findViewById(R.id.text);
text.setText("Hello, Welcome to MrWei's blog!");

ImageView image = (ImageView)layout.findViewById(R.id.image);
image.setImageResource(R.drawable.icon);

builder = newAlertDialog.Builder(mContext);
builder.setView(layout);
alertDialog = builder.create();
alertDialog.show();
}
}