RT，贴代码：

1 public void startAppSafe(String pkgName){ 2         PackageManager pm = getPackageManager(); 3         Intent in = new Intent(Intent.ACTION_MAIN); 4         in.addCategory(Intent.CATEGORY_LAUNCHER); 5         in.setPackage(pkgName); 6         List
     
       ri = pm.queryIntentActivities(in, 0); 7         if (ri != null && ri.size() > 0) { 8             Intent i = new Intent(); 9             i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);10             i.setClassName(pkgName, ri.get(0).activityInfo.name);11             try {12                 startActivity(i);13             } catch (Exception e) {14                 Toast.makeText(this,15                         res.getString(R.string.activity_not_found),16                         Toast.LENGTH_SHORT).show();17             }18         } else {19             Toast.makeText(this, res.getString(R.string.activity_not_found),20                     Toast.LENGTH_SHORT).show();21         }22     }