[英]Cant display arraylist in logs
Helllo guys, i have arraylist created from SQLite database, when i try to display this arraylist in logs i have: Helllo家伙,我已经从ArrayList的 SQLite数据库,当我试图显示此ArrayList日志中我已经创建:
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777ae8
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777cb0
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777cd0
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777cf0
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777d10
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777d30
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777d50
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777d70
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777d90
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777db0
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777dd0
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777df0
01-05 18:57:50.238 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777e10
01-05 18:57:50.239 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777e90
01-05 18:57:50.239 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777eb0
01-05 18:57:50.239 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777ed0
01-05 18:57:50.239 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777ef0
01-05 18:57:50.239 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777f10
01-05 18:57:50.239 16099-16099/com.testdymamicalarray I/ARRAY﹕ com.testdymamicalarray.Cards@41777f30
Why i didnt see values of this arraylist? 为什么我没有看到此arraylist的值?
My code in MainActivity : 我在MainActivity中的代码:
List cards=dataBaseAdapter.getAllCards();
int a=cards.size();
for(int i=0;i<a;i++){
Log.i("ARRAY",cards.get(i).toString());
}
Method to create ArrayList in DBAdapter : 在DBAdapter中创建ArrayList的方法 :
public List getAllCards(){
List cards = new ArrayList();
SQLiteDatabase sqLiteDatabase= helper.getWritableDatabase();
Cursor cursor=sqLiteDatabase.rawQuery(helper.QUERY,null);
cursor.moveToFirst();
while(!cursor.isAfterLast()){
Cards oneCard=parseCards(cursor);
cards.add(oneCard);
cursor.moveToNext();
}
cursor.close();
return cards;
}
Please tell me what im doing wrong. 请告诉我我做错了什么。 I just whant to see my values in logs such as id, name, value, code,country 我只是想在日志中查看我的值,例如ID,名称,值,代码,国家
EDIT: 编辑:
Class Cards 类卡
public class Cards {
int id;
String name;
String code;
String value;
String country;
public Cards(int id, String name, String code, String value,String country) {
this.id = id;
this.name = name;
this.code = code;
this.value = value;
this.country = country;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public Cards(String name, String code, String value , String country) {
this.name = name;
this.code = code;
this.value = value;
this.country = country;
}
public Cards() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
} }
You'll need to override toString()
in your Cards
class to produce the output you want. 您需要在Cards
类中重写toString()
才能生成所需的输出。
Example: 例:
@Override
public String toString() {
return String.format("id:%d name:%s code:%s value:%s country:%s",
id, name, code, value, country);
}
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