启动Activity前检测

-1

Intent intent = new Intent(xxxxx);// Check if an Activity exists to perform this action.PackageManager pm = context.getPackageManager();ComponentName cn = intent.resolveActivity(pm);if(cn!=null){context.startActivity(intent);}

-2

intent.setComponent(new ComponentName("com.wind.emode",                                                            "com.wind.emode.testcase.SalesCountStatus"));if(context.getPackageManager().resolveActivity(intent,0)!=null){context.startActivity(intent);}