如何从MainActivity中的RecyclerView创建的所有EditTexts中检索值？
在我的RecyclerView适配器中，我正在扩展我的内部类：
public class MyPersonalAdapter extends RecyclerView.Adapter<MyPersonalAdapter.MyPersonalViewHolder>
我正在引用该内部类中的EditText：
class MyPersonalViewHolder extends RecyclerView.ViewHolder {
TextView numberTextView;
EditText nameEditText;
public MyPersonalViewHolder(View itemView) {
super(itemView);
numberTextView = (TextView) itemView.findViewById(R.id.tv_number);
nameEditText = (EditText) itemView.findViewById(R.id.et_name);
}
}
在我想要使用的MainActivity中：
for (int i = 0; i < count; i++) {
String name = "Somehow get that name";
cv.put(MyContract.MyEntry.COLUMN_NAME, "name");
}
答案 0 :(得分：9)
搞定了，这是编辑过的代码：
mAdapter = new MyClassAdapter(this, mDataset.size);
mRecyclerView.setAdapter(mAdapter);
mRecyclerview.setItemViewCacheSize(mDataset.size());
List<ContentValues> list = new ArrayList<>();
for (int i = 0; i < mDataset.size(); i++) {
View view = recyclerView.getChildAt(i);
EditText nameEditText = (EditText) view.findViewById(R.id.et_name);
String name = nameEditText.getText().toString();
ContentValues cv = new ContentValues();
cv.put(MyContract.MyEntry.COLUMN_NAME, name);
list.add(cv)
}
// I encapsulated this in a try catch
for (ContentValues c:list) {
mDb.insert(MyClassContract.MyClassEntry.TABLE_NAME, null, c);
}
答案 1 :(得分：1)
在recyclerview适配器中的bindview方法中实现addTextChangedListener。
每次在任何单元格中修改edittext文本时，都会修改该位置的arraylist字符串。
稍后当你需要整个arraylist时，只需通过任何公共getmethod从适配器类发回它。
这应该足够了。
答案 2 :(得分：1)
试试这个：
<tree string="School Tree" editable="top">
<field name="name"/>
<field name="school_id"/>
<field name="age" />
</tree>
答案 3 :(得分：1)
我在Adapter类中创建了一个getData函数。
public String getData()
{
String s;
s=txt1.getText().toString();
return s;
}
然后在我的MainActivity中
public void onSave(View view) {
String[] s=new String[length];
for(int i=0;i<ad.getItemCount();i++)
{
s[i]=ad.getData().toString();
}
}
这样，您可以在数组中保存编辑文本条目。
答案 4 :(得分：0)
这对我有用：
mySetEnabled是我在viewHolder中实现的方法。
if(mRecView!=null) {
int size=mRecView.getChildCount();
for (int i = 0; i < size; i++) {
myAdapter.myViewHolder wordView = (myAdapter.myViewHolder)mRecView.findViewHolderForLayoutPosition(i);
if(wordView!=null)
wordView.mySetEnabled(state);
}
}
答案 5 :(得分：0)
尝试这种方式
MyPersonalViewHolder类扩展了RecyclerView.ViewHolder {
TextView numberTextView;
EditText nameEditText;
public MyPersonalViewHolder(View itemView) {
super(itemView);
numberTextView = (TextView) itemView.findViewById(R.id.tv_number);
nameEditText = (EditText) itemView.findViewById(R.id.et_name);
nameEditText.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
values.add(getAdapterPosition(),s.toString());
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
}
还要定义一个函数
public String getValue(int position){
return values.get(position);
}
现在getValue可以从MainActivity调用了。
答案 6 :(得分：0)
go: mov ax,cs
mov dx,#0x4000-12 ! 0x4000 is arbitrary value >= length of
! bootsect + length of setup + room for stack
! 12 is disk parm size
! bde - changed 0xff00 to 0x4000 to use debugger at 0x6400 up (bde). We
! wouldn't have to worry about this if we checked the top of memory. Also
! my BIOS can be configured to put the wini drive tables in high memory
! instead of in the vector table. The old stack might have clobbered the
! drive table.
mov ds,ax
mov es,ax
mov ss,ax ! put stack at INITSEG:0x4000-12.
mov sp,dx
/*
* Many BIOS's default disk parameter tables will not
* recognize multi-sector reads beyond the maximum sector number
* specified in the default diskette parameter tables - this may
* mean 7 sectors in some cases.
*
* Since single sector reads are slow and out of the question,
* we must take care of this by creating new parameter tables
* (for the first disk) in RAM. We will set the maximum sector
* count to 18 - the most we will encounter on an HD 1.44.
*
* High doesn't hurt. Low does.
*
* Segments are as follows: ds=es=ss=cs - INITSEG,
* fs = 0, gs = parameter table segment
*/
push #0
pop fs
mov bx,#0x78 ! fs:bx is parameter table address
seg fs
lgs si,(bx) ! gs:si is source
mov di,dx ! es:di is destination
mov cx,#6 ! copy 12 bytes
cld
rep
seg gs
movsw
mov di,dx
movb 4(di),*18 ! patch sector count
seg fs
mov (bx),di
seg fs
mov 2(bx),es
mov ax,cs
mov fs,ax
mov gs,ax
xor ah,ah ! reset FDC
xor dl,dl
int 0x13
这是适配器中的代码，不能与textchange侦听器一起使用。所以我不得不使用textchange侦听器和setOnfoucusChange（100％工作）
//So the other day I spend full day to get data(list of edittext) from recyclerview to activity when i press
button in activity
//perform onclick of button
然后在活动中编写以下代码
holder.mComment.setOnFocusChangeListener(new
View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
String data=holder.mComment.getText().toString();
commentList[position]=data;
}
if(position==mList.size()-1){
holder.mComment.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence s, int i, int i1, int i2) {
commentList[position]=s.toString();
}
@Override
public void afterTextChanged(Editable editable) {
}
});
}
}
});
Intent intent = new Intent("mrn_intent");
Bundle args = new Bundle();
args.putSerializable("comment_list",(Serializable)commentList);
args.putSerializable("rating_list", (Serializable) mRatingList);
intent.putExtra("BUNDLE_COMMENT",args);
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
答案 7 :(得分：0)
好。我有同样的问题，但是我的解决方案既不同又简单。基本上，我会列出对象，然后使用edittext更新它们的值。因此，为了正确执行此操作，我使用了for循环，而不是使用position；如果到达的对象与textview具有相同的名称，则中断循环并使用i作为索引进行更新。您可以在适配器下面看到我一直在使用的代码：
int i;
for(i = 0; i<list.size(); i++){
if(list.get(i).getName().equals(holder.name.getText())){
break;
}
}
Commodity updated = list.get(i);
updated.setValor(Float.parseFloat(s.toString())); // recovering value of my edit text
list.set(i, updated);
atualizado[i] = Float.parseFloat(s.toString());