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Android SQLite DB When to Close

I am working with a SQLite database on android. My database manager is a singleton and right now opens a connection to the database when it is initialized. It is safe to leave the database open the entire time so that when someone calls my class to work with the database it is already open? Or shoul...
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Android: Expand/collapse animation

... final int targetHeight = v.getMeasuredHeight(); // Older versions of android (pre API 21) cancel animations for views with a height of 0. v.getLayoutParams().height = 1; v.setVisibility(View.VISIBLE); Animation a = new Animation() { @Override protected void appl...
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accepting HTTPS connections with self-signed certificates

...te Authority (CA) like Verisign , GlobalSIgn , etc., listed on the set of Android Trusted Certificates, I keep getting javax.net.ssl.SSLException: Not trusted server certificate . ...
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Remove the image from a imageview Android [duplicate]

...which supports setImageResource(0) on all devices. – android developer Apr 30 '18 at 11:28 add a comment  |  ...
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Determining the current foreground application from a background task or service

... permission in activity menifest and works perfectly. <uses-permission android:name="android.permission.GET_TASKS" /> share | improve this answer | follow ...
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Set style for TextView programmatically

... content: <?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="This is a template" style="@style/my_style" /> th...
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Logcat not displaying my log calls

I'm a total noob at Android programming, and wanted to learn how to debug my apps. I can't seem to have my Log.i|d|v calls displayed in the LogCat. ...
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How to use SharedPreferences in Android to store, fetch and edit values [closed]

...SomeDate(); prefs.edit().putLong(dateTimeKey, dt.getTime()).apply(); The android sdk's sample directory contains an example of retrieving and storing shared preferences. Its located in the: <android-sdk-home>/samples/android-<platformversion>/ApiDemos directory Edit==> I noticed...
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Get content uri from file path in android

... hey Uri.fromFile will not work on android 26+, you should use file provider – vuhung3990 May 24 '18 at 2:52 ...
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How to change language of app when user selects language?

... It's excerpt for the webpage: http://android.programmerguru.com/android-localization-at-runtime/ It's simple to change the language of your app upon user selects it from list of languages. Have a method like below which accepts the locale as String (like 'en' f...