最近这段时间一直在看Android，利用Listview去实现点赞功能，下面给大家介绍下基本思路。
基本思路：
进入界面–》获取数据–》
在Listview中显示–》
通过map集合（position,boolean）保存每一行是否被点击–》
利用实体类去保存相应的对象–》
get/set方法进行相应值得改变–》
点击一次，相应的数量加1
只实现了点赞功能，踩和赞基本类似。
具体实现如下：
继承自baseAdapter
package com.gz.test_listview;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.baseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MainActivityAdapter extends baseAdapter{
//用来获取界面上的元素
private ViewHolder holder;
private Context context;
//这里的Bean是个测试用的内部类，将点赞数和踩得数存起来，可以定义一个类，
//直接获取数据就好，需要改进下
private List praise_step_num = new ArrayList();
private LayoutInflater inflater;
//保存当前点赞数
List> listItems;
private Map isExist = new HashMap();
public MainActivityAdapter(Context context,List> listItems){
this.context = context;
this.listItems = listItems;
inflater = LayoutInflater.from(context);
Log.i("listItem",listItems.toString());
init();
}
private void init() {
for (int i = 0;i
MainActivity
进行Listview值赋值，然后进行和Adapter的绑定
package com.gz.test_listview;
import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class MainActivity extends Activity {
private ListView listview;
private String[] title = {"商用","家用","测试","多联","空气能","商用","家用","测试","多联","空气能"};
private String[] praise = {"3","1","0","0","0","3","1","0","0","0"};
private String[] step = {"3","0","0","0","0","3","0","0","0","0"};
private ArrayList> map = new ArrayList>();
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listview = (ListView) findViewById(R.id.listview);
for(int i=0;i item = new HashMap();
item.put("title",title[i]);
item.put("praise",praise[i]);
item.put("step",step[i]);
map.add(item);
}
MainActivityAdapter adapter = new MainActivityAdapter(this,map);
listview.setAdapter(adapter);
listview.setonItemClickListener(new AdapterView.onItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
Intent intent = new Intent(MainActivity.this,DetailActivity.class);
startActivity(intent);
}
});
}
}
跳转界面，测试用
package com.gz.test_listview;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
public class DetailActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.detail_info);
}
}
简单的动画效果的实现
直接用就好了
package com.gz.test_listview;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.ScaleAnimation;
public class AnimationTools {
public static void scale(View v) {
ScaleAnimation anim = new ScaleAnimation(1.0f, 1.5f, 1.0f, 1.5f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
anim.setDuration(300);
v.startAnimation(anim);
}
}
界面
Listview子项
点击item后进入的界面
代码中是我对程序的理解，有的地方可能不是很明白，还得完善完善
这篇文章给了我很大帮助，动画效果就是搬过来的，哈哈，很不错，学习了
https://www.jb51.net/article/97335.htm
以上所述是小编给大家介绍的Android中Listview点赞功能的实现，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！
