let me first start with showing the code:
build.gradle (module):
android {
compileSdkVersion 24
buildToolsVersion "24.0.2"
dataBinding {
enabled = true
}
defaultConfig {
applicationId "com.example.oryaa.basecalculator"
minSdkVersion 15
targetSdkVersion 24
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.google.android.gms:play-services-appindexing:8.1.0'
activity_main.xml:
<data>
<import type="android.view.View" />
<variable
name="baseCalcModel"
type="com.example.oryaa.basecalculator.BaseCalcModel">
</variable>
</data> <TextView
android:id="@+id/resultOutput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/resultTextView"
android:textColor="@color/DarkBlue"
android:text="@{baseCalcModel.calcResult}"
android:textSize="32dp" />
MainActicity.java:
public class MainActivity extends AppCompatActivity {
EditText userInput = null;
TextView resultTV = null;
Spinner fromBaseSpinner = null;
Spinner toBaseSpinner = null;
ArrayList<String> spinnerArray = new ArrayList<>();
String _allowedChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String _onlyOnceChar = "-+*/";
BaseCalcModel baseCalcModel = new BaseCalcModel();
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
binding.setBaseCalcModel(this.baseCalcModel);
this.resultTV = (TextView) this.findViewById(R.id.resultOutput);
this.fromBaseSpinner = (Spinner) findViewById(R.id.fromBaseSpinner);
this.toBaseSpinner = (Spinner) findViewById(R.id.toBaseSpinner);
this.userInput = (EditText) findViewById(R.id.userInput);
SetupUI();
baseCalcModel.setCalcResult("test");
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
BaseCalcModel.java:
ublic class BaseCalcModel extends BaseObservable {
public String calcResult;
public BaseView firstNumView;
public BaseView secondNumView;
public BaseView resultNumView;
public int firstNumBase;
public int secondNumBase;
public int resultNumBase;
public String error;
@Bindable
String getCalcResult() {
return calcResult;
}
@Bindable
public BaseView getFirstNumView() {
return firstNumView;
}
@Bindable
public BaseView getSecondNumView() {
return secondNumView;
}
@Bindable
public BaseView getResultNumView() {
return this.resultNumView;
}
@Bindable
public int getFirstNumBase() {
return this.firstNumBase;
}
@Bindable
public int getSecondNumBase() {
return this.secondNumBase;
}
@Bindable
public int getResultNumBase() {
return this.resultNumBase;
}
@Bindable
public String getError() {
return this.error;
}
public void setCalcResult(String calcResult) {
this.calcResult = calcResult;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.calcResult);
}
public void setFirstNumView(BaseView firstNumView) {
this.firstNumView = firstNumView;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.firstNumView);
}
public void setSecondNumView(BaseView secondNumView) {
this.secondNumView = secondNumView;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.secondNumView);
}
public void setResultNumView(BaseView resultNumView) {
this.resultNumView = resultNumView;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.resultNumView);
}
public void setFirstNumBase(int firstNumBase) {
this.firstNumBase = firstNumBase;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.firstNumBase);
}
public void setSecondNumBase(int secondNumBase) {
this.secondNumBase = secondNumBase;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.secondNumBase);
}
public void setResultNumBase(int resultNumBase) {
this.resultNumBase = resultNumBase;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.resultNumBase);
}
public void setError(String error) {
this.error = error;
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.error);
}
public BaseCalcModel() {
firstNumView = new BaseView();
secondNumView = new BaseView();
resultNumView = new BaseView();
firstNumBase = 0;
secondNumBase = 0;
resultNumBase = 0;
calcResult = "";
error = "";
}
public BaseCalcModel(BaseView firstNumView, BaseView secondNumView, BaseView resultNumView,
int firstNumBase, int secondNumBase, int resultNumBase, String clcResult,
String error) {
this.firstNumView = firstNumView;
this.secondNumView = secondNumView;
this.resultNumView = resultNumView;
this.firstNumBase = firstNumBase;
this.secondNumBase = secondNumBase;
this.resultNumBase = resultNumBase;
this.calcResult = clcResult;
this.error = error;
}
Im trying to do simple data binding, but my view doesn't updating after the proparty is changing. as you can see in the image, my code arriving to:
notifyPropertyChanged(com.example.oryaa.basecalculator.BR.calcResult);
but the view is updating only when the app started or when I'm rotating my phone for vertical to horizontal or vice versa.
Where is my problem?
Thanks a lot, Or Yaacov
In case you might be experiencing this issue with LiveData
, you might've forgotten to set lifecycle owner of your binding;
binding.setLifecycleOwner(lifecycleOwner)