어플이 설치되어 있는지 확인하기, android

android-getPackageManage.java

// 카카오톡이 설치되어 있는지 확인
@Override	
public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        try {
                this.getPackageManager().getPackageInfo("com.kakao.talk", PackageManager.GET_ACTIVITIES);
        } catch (NameNotFoundException e) {
                e.printStackTrace();
                ToastUtil.showShotToast(this, "없음");
        }
        ToastUtil.showShotToast(this, "있음");
}