How to realize Android to develop some small functions

This article is about how to implement some small functions of Android development. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Toast (message prompt box):

Toast.makeText (MainActivity.this, "position changed:", 3000). Show ()

Intent Jump: (remember to register Activity in AndroidManifest.xml)

Intent intent=new Intent (Success.this,luru.class); startActivity (intent)

Intent implicitly starts:

Intent intent=new Intent (Intent.ACTION_VIEW,Uri.parse (urlString)); startActivity (intent); urlString can be "www.baidu.com"

System acquisition time:

Date now=new Date (); / / Custom format SimpleDateFormat d1=new SimpleDateFormat ("yyyy-MM-dd HH:mm:ss"); String time=d1.format (now)

Camera call:

String filepath = "/ mnt/sdcard/DCIM/Camera/" + phototime + ".png"

Final File file = new File (filepath)

Final Uri imageuri = Uri.fromFile (file)

Intent intent = new Intent (MediaStore.ACTION_IMAGE_CAPTURE)

Intent.putExtra (android.provider.MediaStore.EXTRA_OUTPUT, imageuri)

StartActivityForResult (intent, 110)

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