"Uses or overrides a deprecated API" in android compiling

Sometimes we write android apps with eclipse and generate apks normally, but put the apks' package in base for entire build, we get the warning/error "uses or overrides a deprecated API", then quit the building.

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A deprecated API is an API or part of API that is not officially supported anymore, the compiler will check for it and throw the warning/error then.

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Here we should manage our APIs.

i.e.

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btn.setOnClickListener(new View.OnClickListener(){			public void onClick(View v) {				// TODO Auto-generated method stub				ActivityManager am = (ActivityManager)cnx.getSystemService(Context.ACTIVITY_SERVICE);				ComponentName cn = am.getRunningTasks(1).get(0).topActivity;				String des = (String)am.getRunningTasks(1).get(0).description;				bmp = am.getRunningTasks(1).get(0).thumbnail;								Log.i("SnapshotDemo","bmp = "+bmp+"/ncn = "+cn+"/ndes = "+des);			}        	        });

Android recommend to use new View.OnClickListener()