Difference between logical operators and or Java
Basic difference remember it!!!
if(TRUE && TRUE && TRUE) return TRUE otherwise FALSE
if(FALSE || FALSE || FALSE) return FALSE otherwise TRUE
Logical operator and &&
If all conditions/operands is TRUE return TRUE, otherwise return FALSE
Logical operator or ||
The logical OR operator (||) returns the boolean value true if either or both operands is true and returns false otherwise.
If one operands is TRUE, condition is TRUE:
rev
if(TRUE && TRUE && TRUE) return TRUE otherwise FALSE
if(FALSE || FALSE || FALSE) return FALSE otherwise TRUE
Logical operator and &&
If all conditions/operands is TRUE return TRUE, otherwise return FALSE
if( true and true and true){
// return true - do something
}
int a = 6;
if(a == 6 && a == 6 ) {
// if TRUE
// true && true return true, do something
}
if(a == 6 && a == 5){
// nothing, not attended
}else{
// true && false return false, or false && false return false
// do something
}
Logical operator or ||
The logical OR operator (||) returns the boolean value true if either or both operands is true and returns false otherwise.
If one operands is TRUE, condition is TRUE:
if(FALSE OR FALSE OR TRUE) return TRUE
if(FALSE OR TRUE OR FALSE) return TRUE
if(FALSE OR FALSE OR FALSE) return FALSE
int a = 6;
if(a==6 || a==5){ // TRUE || FALSE return TRUE
//if return TRUE
//one from operadns is TRUE return true, do something
}
if(a==5 || a==4){ // FALSE || FALSE return FALSE
// not attended
}else{
//if return FALSE, do something
}
rev
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Další témata ....(Topics)
First: AdView is in XML file
Second: Using AdView in Fragment with LinearLayout
Resolve error in ADT Graphical layout editor:
The following classes could not be instantiated:
- com.google.android.gms.ads.AdView
More about:
https://developers.google.com/mobile-ads-sdk/docs/admob/android/play-migration?hl=it
<com.google.android.gms.ads.AdView
xmlns:ads="//schemas.android.com/apk/res-auto"
android:id="@+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
ads:adUnitId="MY_AD_UNIT_ID"
ads:adSize="BANNER"/>
// onResume
AdView adView = (AdView)this.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice("TEST_DEVICE_ID")
.build();
adView.loadAd(adRequest);
Second: Using AdView in Fragment with LinearLayout
Resolve error in ADT Graphical layout editor:
The following classes could not be instantiated:
- com.google.android.gms.ads.AdView
// layout in xml file
<LinearLayout
android:id="@+id/layout"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
// java class with fragment in Fragment class or in Activity class
private static AdView adView;
@Override
public void onResume(){
super.onResume();
try {
// in xml is empty layout
adView = new AdView(getActivity());
adView.setAdUnitId("ca-app-pub-626/638103xxxxxxx");
adView.setAdSize(AdSize.BANNER);
LinearLayout layout = (LinearLayout)getView() .findViewById(R.id.layout);
layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
More about:
https://developers.google.com/mobile-ads-sdk/docs/admob/android/play-migration?hl=it