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98 changes: 98 additions & 0 deletions
98
app/src/main/java/com/njzjz/chemicaltools/RankActivity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package com.njzjz.chemicaltools; | ||
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| import android.content.Intent; | ||
| import android.os.Bundle; | ||
| import android.support.v7.app.ActionBar; | ||
| import android.support.v7.app.AppCompatActivity; | ||
| import android.view.MenuItem; | ||
| import android.widget.ListView; | ||
| import android.widget.SimpleAdapter; | ||
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|
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| import com.avos.avoscloud.AVException; | ||
| import com.avos.avoscloud.AVQuery; | ||
| import com.avos.avoscloud.AVUser; | ||
| import com.avos.avoscloud.FindCallback; | ||
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|
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| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
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| public class RankActivity extends AppCompatActivity { | ||
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|
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_rank); | ||
| ActionBar ab = getSupportActionBar(); | ||
| ab.setDisplayShowHomeEnabled(true); | ||
| ab.setDisplayHomeAsUpEnabled(true); | ||
| ab.setHomeButtonEnabled(true); | ||
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|
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| AVQuery<AVUser> userQuery = new AVQuery<>("_User"); | ||
| userQuery.findInBackground(new FindCallback<AVUser>() { | ||
| @Override | ||
| public void done(List<AVUser> list, AVException e) { | ||
| List<AVUser> userlist = list;// 符合 priority = 0 的 Todo 数组 | ||
|
|
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| //生成动态数组，并且转载数据 | ||
| ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>(); | ||
| for(int i=0;i<userlist.size();i++) | ||
| { | ||
| HashMap<String, String> map = new HashMap<String, String>(); | ||
| String score_str=userlist.get(i).getString("examCorrectNumber"); | ||
| int score=Integer.parseInt(userlist.get(i).getString("examCorrectNumber")); | ||
| if(score>0) { | ||
| String name=userlist.get(i).getString("qqname"); | ||
| if(name==null){ | ||
| name=userlist.get(i).getUsername(); | ||
| name=name.substring(0, name.indexOf("@")); | ||
| } | ||
| map.put("text1", name); | ||
| map.put("text2", score_str); | ||
| mylist.add(map); | ||
| } | ||
| } | ||
|
|
||
| //冒泡排序 | ||
| int i, j, len = mylist.size(); | ||
| HashMap<String, String> temp; | ||
| for (i = 0; i < len - 1; i++) | ||
| for (j = 0; j < len - 1 - i; j++) | ||
| if (Integer.parseInt(mylist.get(j).get("text2")) < Integer.parseInt(mylist.get(j+1).get("text2"))) { | ||
| temp = mylist.get(j); | ||
| mylist.set(j,mylist.get(j+1)); | ||
| mylist.set(j+1, temp); | ||
| } | ||
| for(i=0;i<len;i++) mylist.get(i).put("number", String.valueOf(i + 1)); | ||
|
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| //生成适配器，数组===》ListItem | ||
| SimpleAdapter mSchedule = new SimpleAdapter(RankActivity.this, //没什么解释 | ||
| mylist,//数据来源 | ||
| R.layout.ranklist,//ListItem的XML实现 | ||
|
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| //动态数组与ListItem对应的子项 | ||
| new String[] {"number","text1", "text2"}, | ||
|
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| //ListItem的XML文件里面的两个TextView ID | ||
| new int[] {R.id.list_item_card_number,R.id.list_item_card_text1,R.id.list_item_card_text2}); | ||
| //添加并且显示 | ||
| ListView rank_list = (ListView) findViewById(R.id.rank_list); | ||
| rank_list.setAdapter(mSchedule); | ||
| } | ||
| }); | ||
| } | ||
|
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||
| @Override | ||
| public boolean onOptionsItemSelected(MenuItem item) { | ||
| switch (item.getItemId()) { | ||
| //菜单栏返回键功能 | ||
| case android.R.id.home: | ||
| Intent intent = new Intent(this, TitleActivity.class); | ||
| intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); | ||
| this.finish(); | ||
| return true; | ||
| default: | ||
| return super.onOptionsItemSelected(item); | ||
| } | ||
| } | ||
| } |
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