Skip to main content

Check SD card availability on android device programatically

We can check SD card is present or not before doing the file operations on the SD card,

 For Example:

 public static boolean isSDcardPresent(){
return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);

 }

 This code will return true if the SD card is present.

Comments

Post a Comment

Popular posts from this blog

Launch an Android application on Bootup

If you want to start an android application on device restarts, you need to listen for BOOT_COMPLETED broadcast in the manifest file and launch the Launcher activity in onreceive of BOOT_COMPLETED broadcast receiver. Follow below steps to launch activity on device boot up :- 1. Register for Boot completed receiver in Android Manifest file. Add below Permission to receive BOOT_COMPLETED broadcast, <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> Register for Boot completed broadcast receiver , <receiver android:name="AppAutostartReceiver" android:enabled="true" > <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> </intent-filter> </receiver> 2. Add custom Broadcast receiver in the application, public class AppAutostartReceiver extends BroadcastReceiver { @Override public void onReceive(Context cont...
Post a Comment
Read more

Whitelist an android application on android 6.0/Marshmallow

Whitelist wont disable doze mode for your app, however can use network and hold wake lock. Whitelist an android application through code, boolean isIgnoringBatteryOptimizations = pm.isIgnoringBatteryOptimizations(getPackageName()); if(!isIgnoringBatteryOptimizations){   Intent intent = new Intent();   intent.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);   intent.setData(Uri.parse("package:" + getPackageName()));   startActivityForResult(intent, MY_IGNORE_OPTIMIZATION_REQUEST);   }                             Check for the result, @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {     if (requestCode == MY_IGNORE_OPTIMIZATION_REQUEST) {          PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE);          boolean isIgnoringBatteryOptimiza...
Post a Comment
Read more