//通后对话框显示一个视图          
public void showCustomDialog()   {   
    AlertDialog.Builder builder;   
    AlertDialog alertDialog;   
    Context mContext = LayoutInflaterDemo.this;   
       
    //下面俩种方法都可以   
 //LayoutInflater inflater = getLayoutInflater();   
    LayoutInflater inflater = (LayoutInflater)mContext.getSystemService(LAYOUT_INFLATER_SERVICE);   
    View view= inflater.inflate(R.layout.custom_dialog,null);   //R.layout.custom_dialog为XML的布局文件
 TextView text = (TextView) view.findViewById(R.id.text);   
    text.setText("Hello!");   
    ImageView image = (ImageView) view.findViewById(R.id.image);   
    image.setImageResource(R.drawable.icon);   
    builder = new AlertDialog.Builder(mContext);   
    builder.setView(layout);   
    alertDialog = builder.create();   
    alertDialog.show();   
}   

//通过Toast来显示视图
protected void showToast(int type){
	Toast.makeText(this, "*********", Toast.LENGTH_LONG).show();   
	LayoutInflater inflater = LayoutInflater.from(this);  	
	View view=inflater.inflate(R.layout.ID, null);    	
	//2句可以合成一句
	//View view=LayoutInflater.from(this).inflate(R.layout.ID, null);   	
	Toast toast = new Toast(this);       
	toast.setView(view);          
	toast.setDuration(type);         
	toast.show();         
}  

public static LayoutInflater from(Context context) {
    LayoutInflater LayoutInflater =
            (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    if (LayoutInflater == null) {
        throw new AssertionError("LayoutInflater not found.");
    }
    return LayoutInflater;
}

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" 
	android:layout_width="fill_parent"
	android:layout_height="wrap_content">
	
	<LinearLayout android:id="@+id/placeslist_linearlayout"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"
		android:orientation="vertical">
		
	</LinearLayout>	
</ScrollView>