当我加入新的项目,我打电话方法notifyItemInserted()在RecyclerView和动画
public void addItem(ArrayList<ArrayList<String>> arrayList, int position){
this.arrayList=arrayList;
notifyItemInserted(position);
}
,并希望看到添加的项目动态的,但只有在recyclerView前一个项目可以是动画。我试图改变位置(位置+ 1)或(位置-1),但它没有帮助。 活动代码:
private void showDialog(final String table_name) {
...
final Cursor c = db.rawQuery("SELECT * FROM '"+table_name+"'",null);
final String mas[]=c.getColumnNames();
c.close();
final List<EditText> list = new ArrayList<>();
for (int m = 1; m < mas.length; m++) {
list.add(new EditText(this));
list.get(m-1).setHint(mas[m]);
linearLayout.addView(list.get(m-1));
}
alert.setView(linearLayout);
alert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
ArrayList<String> arrayList=new ArrayList<String>();
for (int i=0;i<list.size();i++)
arrayList.add(list.get(i).getText().toString());
try {
arrayList=AESEncryption.encrypt2(arrayList);
ContentValues contentValues=new ContentValues();
for (int i=1;i<mas.length;i++){
contentValues.put(mas[i],arrayList.get(i-1));
}
db.insert(table_name, null, contentValues);
adapter.addItem(startDecrypt(),adapter.getItemCount());
} catch (BadPaddingException e) ...
});
...
alert.show();
}
...
private void fillListView() throws GeneralSecurityException, IOException, ClassNotFoundException {
dbHelper = new DBHelper(this);
dbHelper.setFILENAME(getIntent().getExtras().getString("categoryName"));
db = dbHelper.getWritableDatabase();
dbHelper.createTable(db);
Cursor c = db.rawQuery("SELECT * FROM '"+FILENAME+"'",null);
String mas[]=c.getColumnNames();
String[] mas2 = Arrays.copyOfRange(mas, 1, mas.length);
c.close();
adapter=new RVAdapter(startDecrypt(),mas2,PasswordManagerActivity.this,FILENAME, AESEncryption);
rv.setAdapter(adapter);
rv.setHasFixedSize(true);
}
请给我一个提示,聪明的人。
不幸的是,它没有帮助我。 –
你点击方法有几个错误,你的代码也不完整。也许你应该看看一个recyclerview教程。 –