还可以使用如下方式进行button的响应，就是不使用匿名内部类，可以直接让当前类实现OnClickListener接口即可。下面是原来的方式，通过代码我们可以看到--该方法为每一个button对象都设置了监听实践，非常繁琐，那么简单的方法就是当前您类直接实现监听方法

package com.example.peipeng.litepal_demo;

import android.database.sqlite.SQLiteDatabase;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

import org.litepal.LitePal;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

LitePal.initialize(this);

setContentView(R.layout.activity_main);

Button create = findViewById(R.id.create_database);

create.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View v){

try{

SQLiteDatabase db = LitePal.getDatabase();

}catch (Exception e){

Toast.makeText(MainActivity.this,"create database wrong ",Toast.LENGTH_SHORT).show();

}

}

});

Button save = findViewById(R.id.save_data);

save.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View v){

Album album = new Album();

album.setId(1);

album.setName("album");

album.setPrice(10.99f);

//album.setCover(getCoverImageBytes());

album.save();

Toast.makeText(MainActivity.this,"this save",Toast.LENGTH_SHORT).show();

}

});

Button show = findViewById(R.id.show_data);

show.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View v){

//这里不清楚ID的值是多少，随便设置的ID，先尝试一下

try{

Album album = LitePal.find(Album.class,1);

Toast.makeText(MainActivity.this,"the name is "+album.getName(),Toast.LENGTH_LONG).show();

}catch (Exception e){

Toast.makeText(MainActivity.this,"something Wrong",Toast.LENGTH_SHORT).show();

}

}

});

}

}

下面是使用当前类实现onClickListener()接口的方式：

package com.example.peipeng.litepal_demo;

import android.database.sqlite.SQLiteDatabase;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

import org.litepal.LitePal;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

LitePal.initialize(this);

setContentView(R.layout.activity_main);

Button create = findViewById(R.id.create_database);//实例化对象

Button save = findViewById(R.id.save_data);

Button show = findViewById(R.id.show_data);

create.setOnClickListener(this);//对该对象设置监听事件

save.setOnClickListener(this);

show.setOnClickListener(this);

}

@Override

public void onClick(View v){

switch (v.getId()){

case R.id.create_database:

LitePal.getDatabase();

break;

case R.id.save_data:

Album album = new Album();

album.setId(1);

album.setName("album");

album.setPrice(10.99f);

album.save();

Toast.makeText(MainActivity.this,"this save",Toast.LENGTH_SHORT).show();

case R.id.show_data:

try{

Album album1 = LitePal.find(Album.class,1);

Toast.makeText(MainActivity.this,"the name is "+album1.getName(),Toast.LENGTH_LONG).show();

}catch (Exception e){

Toast.makeText(MainActivity.this,"something Wrong",Toast.LENGTH_SHORT).show();

}

break;

}

}

}