我正在尝试添加生成随机数据的学生( Realm 对象)的 50 条记录。 onSuccess 永远不会被调用。我需要在成功插入时执行一些任务....
public class MainActivity extends AppCompatActivity {
private static final String ALPHA_NUMERIC_STRING = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
RealmList<Student> mStudentList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
((Button) findViewById(R.id.simple_insert)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this,SimpleInsertActivity.class));
}
});
((Button) findViewById(R.id.buld_insert)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mStudentList = new RealmList<>();
final Realm mRealm = Realm.getDefaultInstance();
mRealm.executeTransactionAsync(new Realm.Transaction() {
@Override
public void execute(Realm realm) {
for(int i=0;i<50;i++){
String s =randomAlphaNumeric(8);
Log.i(getClass().getSimpleName(),"------------------------name : " + s);
Student student = realm.createObject(Student.class);//new Student();
student.setName(randomAlphaNumeric(8));
mStudentList.add(student);
}
Log.i(getClass().getSimpleName(),"----------------------------inserting data");
realm.copyToRealmOrUpdate(mStudentList);
}
}, new Realm.Transaction.OnSuccess() {
@Override
public void onSuccess() {
Toast.makeText(MainActivity.this, "inserted successfully", Toast.LENGTH_SHORT).show();
Log.i(getClass().getSimpleName(),"----------------------------after success :: " +
mRealm.where(Student.class).findAll().size());
}
}, new Realm.Transaction.OnError() {
@Override
public void onError(Throwable error) {
Toast.makeText(MainActivity.this, "error", Toast.LENGTH_SHORT).show();
Log.e(MainActivity.this.getClass().getSimpleName(),"-----------------------error : " + error.toString());
}
});
mRealm.close();
}
});
((Button) findViewById(R.id.delete)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AppClass.deleteRealmDatabase();
}
});
}
public static String randomAlphaNumeric(int count) {
StringBuilder builder = new StringBuilder();
while (count-- != 0) {
int character = (int)(Math.random()*ALPHA_NUMERIC_STRING.length());
builder.append(ALPHA_NUMERIC_STRING.charAt(character));
}
return builder.toString();
}
public class Student extends RealmObject {
public static final String KEY_ROLL_NO = "rollNo";
public static final String KEY_NAME = "name";
@PrimaryKey
String rollNo;
String name;
public Student(String s) {
this.rollNo = UUID.randomUUID().toString();
this.name = s;
}
public Student() {
}
public String getRollNo() {
return rollNo;
}
public void setRollNo(String rollNo) {
this.rollNo = rollNo;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
日志: ..................... [ 06-27 05:13:55.327 28186:28560 I/]------------------------名称:NRW29XS7
[ 06-27 05:13:55.327 28186:28560 I/]------------------------名称:2MS9QSB0
[ 06-27 05:13:55.327 28186:28560 I/]------------------------名称:BJ2JHHHV
[ 06-27 05:13:55.327 28186:28560 I/]----------------------------插入数据
最佳答案
我一直在主线程中关闭 Realm 实例，所以它没有获取实例并且没有调用 onSuccess
关于android - Realm android executeTransactionAsync 不调用 onSuccess，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38048089/