LayoutInflater作用及使用（转）

package com.bivin;
 
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 MainActivity 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 = MainActivity.this;
 
 
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 Mr Wei‘s blog!");
ImageView image = (ImageView) layout.findViewById(R.id.image);
image.setImageResource(R.drawable.icon);
builder = new AlertDialog.Builder(mContext);
builder.setView(layout);
alertDialog = builder.create();
alertDialog.show();
}
}