ボタン(R.id.sort)を押すとソートする処理を作りたいのですが
どうすればいいのでしょうか
java
1package com.example.innovation.f_featnote; 2 3import 省略 4 5public class SqlLoad extends Activity { 6 ListView lv; 7 static String[][] list; 8 static String[] Did = new String[2]; 9 static long id_; 10 static String[] Data; 11 static List<DataList> Dlist = new ArrayList<>(); 12 13 @Override 14 protected void onCreate(Bundle savedInstanceState) { 15 super.onCreate(savedInstanceState); 16 setContentView(R.layout.sql_load); 17 // final boolean[] flg = new boolean[1]; 18 19 20 21 22 Main(); 23 } 24 25 // @Override 26 public void onclick(View v){ 27 switch (v.getId()){ 28 case R.id.sort: 29 Dlist.sort(); 30 break; 31 } 32 } 33 34 35 public void Main(){ 36 Data = SQLDataGet(); 37 // lv = new ListView(this); 38 // ArrayList<String> Data = new ArrayList<>(Arrays.asList(SQLDataGet())); 39 lv = (ListView)findViewById(R.id.sql_load_main); 40 41 for (String[] aList : list) { 42 DataList dataList = new DataList(); 43 dataList.setTitle(aList[0]); 44 dataList.setContent(aList[1]); 45 dataList.setDate(aList[2]); 46 Dlist.add(dataList); 47 } 48 // ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, data); 49 50 ListAdapter adapter = new ListAdapter(getApplicationContext(),Dlist); 51 lv.setAdapter(adapter);//リスト表示 52 // setContentView(lv,new ViewGroup.LayoutParams(WC,WC)); 53 54 lv.setOnItemClickListener(new AdapterView.OnItemClickListener(){ 55 @Override 56 public void onItemClick(AdapterView<?> parent,View view,int position,long id){ 57 // ListView listView = (ListView) parent; 58 // String item = (String)listView.getItemAtPosition(position); 59 Log.d("id",""+id); 60 id_ = id; 61 SQLDContentGet(); 62 SQLDataSet(); 63 finish(); 64 // Toast.makeText(getApplicationContext(),item + "clicked",Toast.LENGTH_LONG).show(); 65 } 66 }); 67 } 68 69 70 71 72 73 public String[] SQLDataGet(){ 74 MainActivity main = new MainActivity(); 75 Context con = this; 76 SQLiteDatabase sdb = main.SQLopen(con.getApplicationContext());//MainActivity参照 77 final String[] columns = new String[]{"title","content","date"};//列名 78 // String where = null;//条件 79 // String[] Args = new String[]{""};//?の置き換え 80 @SuppressLint("Recycle") Cursor c = sdb.query("MemoContents", columns, null, null, null, null, null); 81 int startPostion = c.getPosition(); 82 c.moveToFirst(); 83 // Log.d("DBG",""+c.getCount()); 84 list = new String[c.getCount()][columns.length]; 85 String[] Dlist = new String[c.getCount()]; 86 for (int i = 0; i< list.length; i++){ 87 for (int j = 0; j < list[1].length; j++){ 88 list[i][j] = c.getString(j); 89 Log.d(i+"-"+j,list[i][j]);//デバッグ 90 Dlist[i] = list[i][0]; 91 } 92 c.moveToNext(); 93 } 94 c.moveToPosition(startPostion); 95 96 // finish(); 97 return Dlist; 98 } 99 100 public void SQLDContentGet(){ 101 Did[0] = list[(int)id_][0]; 102 Did[1] = list[(int)id_][1]; 103 } 104 105 public void SQLDataSet(){ 106 Intent data = new Intent(); 107 Bundle bundle = new Bundle(); 108 data.putExtra("key.data",Did); 109 data.putExtras(bundle); 110 setResult(RESULT_OK,data); 111 finish(); 112 } 113 114 @Override 115 public void finish() { 116 super.finish(); 117 } 118} 119 120class ListAdapter extends ArrayAdapter<DataList>{ 121 private LayoutInflater inflater; 122 123 ListAdapter(Context context, List<DataList> objects){ 124 super(context,0,objects); 125 inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 126 } 127 128 @SuppressLint("InflateParams") 129 @NonNull 130 @Override 131 public View getView(final int position, View convertView, @NonNull ViewGroup parent){ 132 if (convertView == null) { 133 convertView = inflater.inflate(R.layout.custom_load_list, null); 134 } 135 final DataList list = this.getItem(position); 136 if (list != null){ 137 TextView title = (TextView) convertView.findViewById(R.id.textView1); 138 title.setText(list.getTitle()); 139 TextView content = (TextView) convertView.findViewById(R.id.textView2); 140 content.setText(list.getContent()); 141 TextView date = (TextView) convertView.findViewById(R.id.textView3); 142 date.setText(list.getDate()); 143 } 144 return convertView; 145 } 146} 147 148 149
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