Logo:android:drawableleft on the left side of the input box
Pop-up Tip: Toast.maketext (this, "hint", Toast.lenght_long). Show (); Return key exit: OnKeyDown (keycode,event) {if (keycode = = Keyevent.keycode_back && Event.getrepeatcount = = 0) {
Exit return true;} Return Super.onkeydown (keycode,event);} Note: 1, test class: Inherit Androidtestcase class method to start with test!! such as Testcreate (), Testsave (). To configure the Mainfest.xml in the <application> <uses-library android:name= "Android.test.runner"/>//name is the default! Outside of <application> <instrumentation android:name= "Android.test.InstrumentationTestRunner" Android: Targetpackage= "Com.ghimtim.firstapp" ></instrumentation>
Name is the default; Targetpackage is the package where Mainactivty.java is located? 2, R.java does not automatically generate the reason: there is an error in Mainfest.xml! 3, the new acivity must be registered in the Mainfest.xml inside!!!
Android Development Note-02
