// 方法一
		Intent intent = new Intent();
		// packageName为应用包名,activityFullName为具有luncher标识的activity的全路径名称
		ComponentName comp = new ComponentName(packageName, activityFullName);
		intent.setComponent(comp);
		intent.setAction("android.intent.action.VIEW");
		context.startActivity(intent);

		// 方法二
		// 上面这种方法启动应用需要同时具有包名和main activity名。下面这种方法只需要包名即可：
		Intent queryIntent = new Intent("android.intent.action.MAIN");
		List<ResolveInfo> list = pm.queryIntentActivities(queryIntent, 0);
		ActivityInfo info = null;
		for (ResolveInfo l : list) {
			if (("icelamp.LinkAngryBirds").equals(l.activityInfo.packageName)) {
				info = l.activityInfo;
				break;
			}
		}
		if (info != null) {
			ntent intent = new Intent();
			intent.setComponent(new ComponentName(info.packageName, info.name));
			intent.setAction("android.intent.action.VIEW");
			startActivity(intent);
		}

如何安装的apk不在桌面上显示，并在自己的代码中启动启