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mysql Foreign key constraint is incorrectly formed error
I have two tables, table1 is the parent table with a column ID and table2 with a column IDFromTable1 (not the actual name) when I put a FK on IDFromTable1 to ID in table1 I get the error Foreign key constraint is incorrectly formed error . I would like to delete table 2 record if tab...
'dragleave' of parent element fires when dragging over children elements
...e and I've attached the dragenter and dragleave events to the <div id="dropzone"> element.
22 Answers
...
Maven: Non-resolvable parent POM
... the same directory (same project). But this doesn't solve this error. Any idea how to fix it?
– Praneeth Peiris
Apr 5 '19 at 9:26
...
JQuery: 'Uncaught TypeError: Illegal invocation' at ajax request - several elements
...s).
So, instead of:
var data = {
'mode': 'filter_city',
'id_A': e[e.selectedIndex]
};
it should be:
var data = {
'mode': 'filter_city',
'id_A': e[e.selectedIndex].value
};
Note: check Jason Kulatunga's answer, it quotes JQuery doc to explain why passing an HTML...
How to set background color of an Activity to white programmatically?
...ned
// within the main layout you are using
View someView = findViewById(R.id.randomViewInMainLayout);
// Find the root view
View root = someView.getRootView();
// Set the color
root.setBackgroundColor(getResources().getColor(android.R.color.red));
...
How to remove padding around buttons in Android?
In my Android app, I have this layout:
17 Answers
17
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How do I use prepared statements in SQlite in Android?
How do I use prepared statements in SQlite in Android?
5 Answers
5
...
Override setter with arc
Did I correctly override the setter when ARC is enabled?
3 Answers
3
...
Stop handler.postDelayed()
...use:
handler.removeCallbacksAndMessages(null);
Docs
public final void removeCallbacksAndMessages (Object token)
Added in API level 1 Remove any pending posts of callbacks and sent
messages whose obj is token. If token is null, all callbacks and
messages will be removed.
Or you cou...
how to read System environment variable in Spring applicationContext
...ng 3.0 adds Spring Expression Language.
You can use
<util:properties id="dbProperties"
location="classpath:config_#{systemProperties['env']}/db.properties" />
Combined with java ... -Denv=QA should solve your problem.
Note also a comment by @yiling:
In order to access system env...