安卓学习第35课——DialogTheme

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:gravity="center_horizontal">

    <ImageView
    android:layout_width="wrap_content"
    android:layout_height="240dp"
        android:src="@drawable/a" />

    <Button
        android:id="@+id/bn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="确定" />

</LinearLayout>

package com.example.dialogtheme;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button bn=(Button) findViewById(R.id.bn);
        bn.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View v) {
                //结束改Activity
                finish();
            }
        });
    }
}