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Android 'Unable to add window — token null is not for an application' exception
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I'm guessing - are you trying to create Dialog with an application context? Something like this:
new Dialog(getApplicationContext());
This is wrong. You need to use an Activity context.
You have to try like:
new Dialog(YourActivity.this);
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How to use ssh agent forwarding with “vagrant ssh”?
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Your private key must be available to the local ssh-agent. You can check with ssh-add -L, if it's not listed add it with ssh-add ~/.ssh/id_rsa
Don't forget to add you public key to ~/.ssh/authorized_keys on the Vagrant VM. You can do it copy-and-pasting or using a tool like ssh-copy-id
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How to launch an Activity from another Application in Android
... to launch an installed package from my Android application. I assume that it is possible using intents, but I didn't find a way of doing it. Is there a link, where to find the information?
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Detect if homebrew package is installed
I'm about to write a shell script to detect if several homebrew packages are installed in the system. Is there a way to use a brew command to achieve that?
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How to pinch out in iOS simulator when map view is only a portion of the screen?
...of the full screen. However, when I try to pinch out on the iOS Simulator it doesn't work since the to nubs fill the entire iPad view on the simulator.
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How to compare arrays in C#? [duplicate]
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Great answer, and I know it's a little late, but that could be simplified to this: bool isEqual = target1.SequenceEqual(target2);
– Connie Hilarides
Mar 16 '14 at 7:57
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How to hide keyboard in swift on pressing return key?
I am using UITextfied while clicking on textfied keyboard appear but when i pressed the return key, keyboard is not disappearing. I used the following code:
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The difference between try/catch/throw and try/catch(e)/throw e
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The constructions
try { ... }
catch () { ... } /* You can even omit the () here */
try { ... }
catch (Exception e) { ... }
are similar in that both will catch every exception thrown inside the try block (and, unless you are simply using this to log the exceptions, should be avoided). No...
Update multiple columns in SQL
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The "tiresome way" is standard SQL and how mainstream RDBMS do it.
With a 100+ columns, you mostly likely have a design problem... also, there are mitigating methods in client tools (eg generation UPDATE statements) or by using ORMs
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How can I monitor the thread count of a process on linux?
I would like to monitor the number of threads used by a specific process on Linux.
Is there an easy way to get this information without impacting the performance of the process?
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