안녕하세요
https://www.masterqna.com/android/101879/livedata-%EC%82%AC%EC%9A%A9%EB%B0%A9%EB%B2%95
이전에 질문한 내용에 데이터바인딩을 적용시켜봤습니다.
알맞게 한 것인지 모르겠습니다. 실행은 되지만 오류가 있습니다. 왜 그런 건가요..?
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
<data>
<import type="android.view.View" />
<variable
name="mymain"
type="com.psw.mylivedata.NameViewModel" />
</data>
<LinearLayout
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="@+id/nameInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="textPersonName"
android:text="Name" />
<Button
android:id="@+id/inputButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="Button"
android:onClick="@{()->mymain.btnClick(nameInput.getText().toString())}"/>
</LinearLayout>
<TextView
android:id="@+id/nameText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TextView" />
</LinearLayout>
</layout>Main
public class MainActivity extends AppCompatActivity {
public NameViewModel nameViewModel;
public ActivityMainBinding mainBinding;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mainBinding = DataBindingUtil.setContentView(this,R.layout.activity_main);
//ViewModel 생성
nameViewModel = new ViewModelProvider(this)
.get(NameViewModel.class);
mainBinding.setMymain(nameViewModel);
Observer<String> nameObserver = new Observer<String>() {
@Override
public void onChanged(String newName) {
mainBinding.nameText.setText(newName);
}
};
//ViewModel에 옵저버 등록
nameViewModel.getCurrentName().observe(this,nameObserver);
}
}ViewModel
public class NameViewModel extends ViewModel {
private MutableLiveData<String> currentName;
public LiveData<String> getCurrentName(){
if(currentName == null){
currentName = new MutableLiveData<String>();
}
return currentName;
}
public void onNameChanged(String name) {
currentName.postValue(name);
}
public void btnClick(String str){
onNameChanged(str);
}
}
ViewModel에서 related problems 문제가 2개 발생했다고 나옵니다.
오류를 클릭하면 아래와 같은 파일로 이동합니다.
여기서 첫번째줄 ActivityMainBinding 과 mMymain이 모두 오류라고 나옵니다.
public class ActivityMainBindingImpl extends ActivityMainBinding implements com.psw.mylivedata.generated.callback.OnClickListener.Listener {
@Nullable
private static final androidx.databinding.ViewDataBinding.IncludedLayouts sIncludes;
@Nullable
private static final android.util.SparseIntArray sViewsWithIds;
static {
sIncludes = null;
sViewsWithIds = new android.util.SparseIntArray();
sViewsWithIds.put(R.id.nameInput, 2);
sViewsWithIds.put(R.id.nameText, 3);
}
// views
@NonNull
private final android.widget.LinearLayout mboundView0;
// variables
@Nullable
private final android.view.View.OnClickListener mCallback1;
// values
// listeners
// Inverse Binding Event Handlers
public ActivityMainBindingImpl(@Nullable androidx.databinding.DataBindingComponent bindingComponent, @NonNull View root) {
this(bindingComponent, root, mapBindings(bindingComponent, root, 4, sIncludes, sViewsWithIds));
}
private ActivityMainBindingImpl(androidx.databinding.DataBindingComponent bindingComponent, View root, Object[] bindings) {
super(bindingComponent, root, 0
, (android.widget.Button) bindings[1]
, (android.widget.EditText) bindings[2]
, (android.widget.TextView) bindings[3]
);
this.inputButton.setTag(null);
this.mboundView0 = (android.widget.LinearLayout) bindings[0];
this.mboundView0.setTag(null);
setRootTag(root);
// listeners
mCallback1 = new com.psw.mylivedata.generated.callback.OnClickListener(this, 1);
invalidateAll();
}
@Override
public void invalidateAll() {
synchronized(this) {
mDirtyFlags = 0x2L;
}
requestRebind();
}
@Override
public boolean hasPendingBindings() {
synchronized(this) {
if (mDirtyFlags != 0) {
return true;
}
}
return false;
}
@Override
public boolean setVariable(int variableId, @Nullable Object variable) {
boolean variableSet = true;
if (BR.mymain == variableId) {
setMymain((com.psw.mylivedata.NameViewModel) variable);
}
else {
variableSet = false;
}
return variableSet;
}
public void setMymain(@Nullable com.psw.mylivedata.NameViewModel Mymain) {
this.mMymain = Mymain;
synchronized(this) {
mDirtyFlags |= 0x1L;
}
notifyPropertyChanged(BR.mymain);
super.requestRebind();
}
@Override
protected boolean onFieldChange(int localFieldId, Object object, int fieldId) {
switch (localFieldId) {
}
return false;
}
@Override
protected void executeBindings() {
long dirtyFlags = 0;
synchronized(this) {
dirtyFlags = mDirtyFlags;
mDirtyFlags = 0;
}
com.psw.mylivedata.NameViewModel mymain = mMymain;
// batch finished
if ((dirtyFlags & 0x2L) != 0) {
// api target 1
this.inputButton.setOnClickListener(mCallback1);
}
}
// Listener Stub Implementations
// callback impls
public final void _internalCallbackOnClick(int sourceId , android.view.View callbackArg_0) {
// localize variables for thread safety
// mymain != null
boolean mymainJavaLangObjectNull = false;
// mymain
com.psw.mylivedata.NameViewModel mymain = mMymain;
mymainJavaLangObjectNull = (mymain) != (null);
if (mymainJavaLangObjectNull) {
if ((nameInput) != (null)) {
nameInput.getText();
if ((nameInput.getText()) != (null)) {
nameInput.getText().toString();
mymain.btnClick(nameInput.getText().toString());
}
}
}
}
// dirty flag
private long mDirtyFlags = 0xffffffffffffffffL;
/* flag mapping
flag 0 (0x1L): mymain
flag 1 (0x2L): null
flag mapping end*/
//end
}
어떻게 해결해야 하나요??
