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我可能只是想念一些簡單的東西，但它在這裏。Android的ListView按鈕不更新SQLite行
目的：當ListView在每個row內創建視圖和onClick按鈕時，更新SQLite數據庫中的行。
第一次更新問題： 紫色框中的數字從「能力」SQLite表中成功拉取數據（整數）（因爲我剛剛重新安裝了示例中的零），但是，我希望ListView的每一行都取這個數字，創建視圖時更新「技能」表。我只把代碼放在第一個「if」上，以便在我重複其他5次之前測試它是否有效。
第二次更新問題： onClick的「+」按鈕，按鈕左側的數字增加1，然後將其與顏色數字相加並將其添加到最左邊的零。如果向下滾動，然後向上滾動，行將重置視圖。如果我在onClick（）的末尾通知DataSetChanged（），則不會發生任何反應。無論哪種情況，數據庫都不會更新。
這兩個事件都沒有更新表格，我在編譯器或運行時沒有收到任何錯誤。
任何幫助將不勝感激！請詢問可能需要額外的代碼/信息。
數據庫處理器類：
private static final String tableSkill = "skill";
private static final String colSkillId = "sID"; // and so on
public int updateSkill(Skill skill) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(colSkillId, skill.getSkillId());
values.put(colSkillMod, skill.getSkillMod());
values.put(colSkillAbil, skill.getSkillAbil());
values.put(colSkillRank, skill.getSkillRank());
values.put(colSkillMisc, skill.getSkillMisc());
// updating row
return db.update(tableSkill, values, colSkillId + " = ?",
new String[] { String.valueOf(skill.getSkillId()) });
}
技能類：
public Skill(int skillId, int skillMod, int skillAbil, int skillRank, int skillMisc){
this._skillId = skillId;
this._skillMod = skillMod;
this._skillAbil = skillAbil;
this._skillRank = skillRank;
this._skillMisc = skillMisc;
}
public int getSkillId(){
return this._skillId;
}
public void setSkillID(int skillId){
this._skillId = skillId;
} // and so on for the other 4
SkillAdapter類：
public class SkillAdapter extends BaseAdapter {
private Context context;
private ArrayList<Skill> skillList;
private DatabaseHandler db;
private int id;
private int mod;
private int rank;
private int abil;
private int misc;
public SkillAdapter(Context context, ArrayList<Skill> list) {
this.context = context;
skillList = list;
}
@Override
public int getCount() {
return skillList.size();
}
@Override
public Object getItem(int position) {
return skillList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup arg2) {
Skill skill = skillList.get(position);
ViewHolder holder = new ViewHolder();
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.lay_skills_row, null);
}
db = new DatabaseHandler(context);
holder.sID = (TextView)convertView.findViewById(R.id.skill_ID);
holder.sName = (TextView)convertView.findViewById(R.id.skill_name);
holder.sKey = (TextView)convertView.findViewById(R.id.skill_key);
holder.sMod = (TextView)convertView.findViewById(R.id.skill_total);
holder.sAbil = (TextView)convertView.findViewById(R.id.skill_abil);
holder.sRanks = (TextView)convertView.findViewById(R.id.skill_ranks);
holder.sMisc = (EditText)convertView.findViewById(R.id.skill_misc);
holder.sButton = (Button)convertView.findViewById(R.id.skill_button);
holder.sButton.setTag(holder);
holder.sButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ViewHolder holder1 = (ViewHolder)v.getTag();
id = Integer.parseInt(holder1.sID.getText().toString());
rank = Integer.parseInt(holder1.sRanks.getText().toString());
misc = Integer.parseInt(holder1.sMisc.getText().toString());
rank = rank + 1;
abil = Integer.parseInt(holder1.sAbil.getText().toString());
mod = rank + abil;
holder1.sRanks.setText("" + String.valueOf(rank));
holder1.sMod.setText(String.valueOf(mod));
db.updateSkill(new Skill(id, mod, abil, rank, 0)); // ISSUE 2
}
});
holder.sID.setText(String.valueOf(skill.getSkillId())); // OK
holder.sName.setText(skill.getSkillName()); // OK
holder.sKey.setText(skill.getSkillKey()); // OK
holder.sMod.setText(String.valueOf(skill.getSkillMod()));
holder.sRanks.setText(String.valueOf(skill.getSkillRank()));
holder.sMisc.setText(String.valueOf(skill.getSkillMisc()));
if(skill.getSkillKey().contentEquals("STR") == true){
holder.sAbil.setText(""+db.getAbilityMod("STR"));
abil = Integer.parseInt(db.getAbilityMod("STR"));
holder.sAbil.setBackgroundColor(Color.parseColor("#e60000"));
db.updateSkill(new Skill(skill.getSkillId(), skill.getSkillMod(), abil, rank, misc));} // ISSUE 1
else if (skill.getSkillKey().contentEquals("DEX") == true){
holder.sAbil.setText(""+db.getAbilityMod("DEX"));
holder.sAbil.setBackgroundColor(Color.parseColor("#0073e6"));}
// will also have db.updates once I know the first one works
else if (skill.getSkillKey().contentEquals("CON") == true){
holder.sAbil.setText(""+db.getAbilityMod("CON"));
holder.sAbil.setBackgroundColor(Color.parseColor("#00e673"));}
else if (skill.getSkillKey().contentEquals("INT") == true){
holder.sAbil.setText(""+db.getAbilityMod("INT"));
holder.sAbil.setBackgroundColor(Color.parseColor("#e600e6"));}
else if (skill.getSkillKey().contentEquals("WIS") == true){
holder.sAbil.setText(""+db.getAbilityMod("WIS"));
holder.sAbil.setBackgroundColor(Color.parseColor("#e67300"));}
else if (skill.getSkillKey().contentEquals("CHA") == true){
holder.sAbil.setText(""+db.getAbilityMod("CHA"));
holder.sAbil.setBackgroundColor(Color.parseColor("#e6e600"));}
return convertView;
}
static class ViewHolder{
Skill skill;
TextView sID;
TextView sName;
TextView sKey;
TextView sMod;
TextView sAbil;
TextView sRanks;
EditText sMisc;
Button sButton;
}}