Android

될 때까지 안드로이드 정리 (오준석의 생존코딩) 3

jihun3

 

 

  1. 26장 이벤트 처리
  2. 26장 분위기 변신 – Toast 커스텀
  3. 27장 툴바 사용하기
  4. 28장 리사이클러뷰
  5. 30장 생산성을 높이는 라이브러리 – Realm

 

 

 

될 때까지 안드로이드 #29 [26장 이벤트 처리]

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.eventexam.MainActivity">

    <TextView
        android:id="@+id/view1"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="#ffebee"
        android:text="onClick, onLongClick" />

    <EditText
        android:id="@+id/edit1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="onFocusChanged, onKey" />

    <EditText
        android:id="@+id/edit2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="onFocusChanged, onKey" />

    <TextView
        android:id="@+id/event_info_text"
        android:la

 

 

 

public class MainActivity extends AppCompatActivity {

    private TextView mView1;
    private View mView2;
    private EditText mEdit1;
    private EditText mEdit2;
    private TextView mEventInfoTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mView1 = (TextView) findViewById(R.id.view1);
        mView2 = findViewById(R.id.view2);

        mEdit1 = (EditText) findViewById(R.id.edit1);
        mEdit2 = (EditText) findViewById(R.id.edit2);

        mEventInfoTextView = (TextView) findViewById(R.id.event_info_text);

        // 클릭
        setClickEvent();
        // 포커스 변경
        setFocusEvent();
        // 키
        setKeyEvent();
        // 터치
        setTouchEvent();
    }

    private void setTouchEvent() {
        mView2.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        Toast.makeText(MainActivity.this, "터치 다운", Toast.LENGTH_SHORT).show();
                        break;
                    case MotionEvent.ACTION_MOVE:
                        mEventInfoTextView.setText("터치 정보 : " + event.toString());
                        break;
                    case MotionEvent.ACTION_UP:
                        Toast.makeText(MainActivity.this, "터치 업", Toast.LENGTH_SHORT).show();
                        break;
                    default:
                        return false;
                }
                return true;
            }
        });
    }

    private void setKeyEvent() {
        View.OnKeyListener keyListener = new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                // 엔터키를 뗄 때 토스트를 표시
                if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
                    Toast.makeText(MainActivity.this, "뒤로가기를 눌렀습니다", Toast.LENGTH_SHORT).show();
                }
                return true;
            }
        };
        View.OnKeyListener keyListener2 = new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                // 엔터키를 뗄 때 토스트를 표시
                if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
                    Toast.makeText(MainActivity.this, "뒤로가기를 눌렀습니다", Toast.LENGTH_SHORT).show();
                }
                return false;
            }
        };
        mEdit1.setOnKeyListener(keyListener);
        mEdit2.setOnKeyListener(keyListener2);
    }

    private void setFocusEvent() {
        View.OnFocusChangeListener focusChangeListener = new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                // 포커스를 가지면 배경색을 빨간색으로
                if (hasFocus) {
                    v.setBackgroundColor(Color.RED);
                } else {
                    v.setBackgroundColor(Color.WHITE);
                }
            }
        };

        mEdit1.setOnFocusChangeListener(focusChangeListener);
        mEdit2.setOnFocusChangeListener(focusChangeListener);
    }

    private void setClickEvent() {
        mView1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this, "클릭", Toast.LENGTH_SHORT).show();
            }
        });
        // 롱 클릭
        mView1.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                Toast.makeText(MainActivity.this, "롱 클릭", Toast.LENGTH_SHORT).show();
                // 이벤트 소비
                return true;
            }
        });
    }
}

 

 

 

 

될 때까지 안드로이드 #30 [26장 분위기 변신 – Toast 커스텀]

 

 

drawable/background_toast.xml

 

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <stroke
        android:width="4dp"
        android:color="#8c9eff" />

    <solid android:color="#ffcdd2" />

    <corners android:radius="16dp" />

</shape>

 

 

layout_toast.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/background_toast"
        android:gravity="center"
        android:padding="16dp"
        android:textColor="#a1887f"
        android:textStyle="bold" />

</LinearLayout>

 

 

activity_main.xml

 

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:onClick="showNewToast"
        android:text="뉴 토스트"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

 

 

public class NewToast extends Toast {

    public NewToast(Context context) {
        super(context);
    }

    public static Toast makeText(Context context, String message, int duration) {
        Toast toast = new Toast(context);

        // Toast의 레이아웃
        View customView = LayoutInflater.from(context).inflate(R.layout.layout_toast, null);

        // Toast에 표시될 TextView
        TextView textView = (TextView) customView.findViewById(R.id.message);
        textView.setText(message);

        // Toast에 레이아웃 설정
        toast.setView(customView);
        toast.setDuration(Toast.LENGTH_SHORT);

        // 위치 조정
        toast.setGravity(Gravity.CENTER, 0, -300);

        return toast;
    }
}

 

 

 

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void showNewToast(View view) {
        NewToast.makeText(this, "이것이 뉴 토스트다", Toast.LENGTH_SHORT).show();
    }
}

 

 

 

 

될 때까지 안드로이드 #31 [27장 툴바 사용하기]

 

 

 

values/styles.xml

 

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

 

 

memu_main.xml

 

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_search"
        android:title="검색"
        app:actionViewClass="androidx.appcompat.widget.SearchView"
        app:showAsAction="ifRoom" />
    <item android:title="Item" />
</menu>

 

 

activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/my_toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="@color/colorPrimary"
        android:elevation="4dp"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light">

        <androidx.appcompat.widget.SearchView
            android:visibility="gone"
            android:id="@+id/search_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:defaultQueryHint="검색어를 입력하세요" />

    </androidx.appcompat.widget.Toolbar>

</LinearLayout>

 

 

 

public class MainActivity extends AppCompatActivity {

    private static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
        setSupportActionBar(myToolbar);

//        SearchView searchView = (SearchView) findViewById(R.id.search_view);
//        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
//            @Override
//            public boolean onQueryTextSubmit(String query) {
//                // 서치뷰의 내용으로 검색을 수행할 때 호출 됨
//                Log.d(TAG, "onQueryTextSubmit: " + query);
//                return true;
//            }
//
//            @Override
//            public boolean onQueryTextChange(String newText) {
//                // 서치뷰의 글자가 변경될 때마다 호출 됨
//                Log.d("MainActivity", "onQueryTextChange: " + newText);
//                return true;
//            }
//        });

        getSupportActionBar().setTitle("변경된 제목");

//        // 서치뷰가 열린 상태로
//        searchView.setIconified(false);
//
//        // 쿼리 힌트
//        searchView.setQueryHint("이것은 힌트입니다");
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);

        MenuItem searchItem = menu.findItem(R.id.action_search);
        SearchView searchView = (SearchView) searchItem.getActionView();
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                Log.d(TAG, "onQueryTextSubmit: " + query);
                return true;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                Log.d(TAG, "onQueryTextChange: " + newText);
                return true;
            }
        });
        return true;
    }
}

 

 

 

 

될 때까지 안드로이드 #32 [28장 리사이클러뷰]

 

 

 

implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha05'
implementation 'androidx.cardview:cardview:1.0.0'

 

 

item_card.xml

 

<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    app:cardCornerRadius="4dp"
    app:cardElevation="8dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="?android:attr/selectableItemBackground"
        android:orientation="vertical">

        <!-- 상단 -->
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="100dp">

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:scaleType="centerCrop"
                android:src="@mipmap/ic_launcher" />

            <TextView
                android:id="@+id/title_text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentBottom="true"
                android:padding="16dp"
                android:shadowColor="#000000"
                android:shadowDx="1.0"
                android:shadowDy="1.0"
                android:shadowRadius="1.0"
                android:text="Title"
                android:textColor="#ffffff"
                android:textSize="24sp" />

        </RelativeLayout>

        <!-- 내용 -->
        <TextView
            android:id="@+id/contents_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="16dp"
            android:text="Contents" />

        <!-- 버튼 -->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <Button
                android:id="@+id/share_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="#00ffffff"
                android:text="Share" />

            <Button
                android:id="@+id/more_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="#00ffffff"
                android:text="learn more"
                android:textColor="#0091ea" />
        </LinearLayout>

    </LinearLayout>

</androidx.cardview.widget.CardView>

 

 

activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:listitem="@layout/item_card" />

</LinearLayout>

 

 

 

public class CardItem {
    private String title;
    private String contents;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContents() {
        return contents;
    }

    public void setContents(String contents) {
        this.contents = contents;
    }

    public CardItem(String title, String contents) {
        this.title = title;
        this.contents = contents;
    }
}

 

 

 

public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.ViewHolder> {

    private final List<CardItem> mDataList;
    private MyRecyclerViewClickListener mListener;

    public MyRecyclerAdapter(List<CardItem> dataList) {
        mDataList = dataList;
    }

    // 뷰 홀더를 생성하는 부분. 레이아웃을 만드는 부분
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item_card, parent, false);
        return new ViewHolder(view);
    }

    // 뷰 홀더에 데이터를 설정하는 부분
    @Override
    public void onBindViewHolder(final ViewHolder holder,final int position) {
        CardItem item = mDataList.get(position);

        holder.title.setText(item.getTitle());
        holder.contents.setText(item.getContents());

        // 클릭 이벤트
        if (mListener != null) {
            final int pos = position;
            // 현재 위치
            holder.itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    mListener.onItemClicked(pos);
                }
            });
            holder.share.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    mListener.onShareButtonClicked(holder.getBindingAdapterPosition());
                }
            });
            holder.more.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    mListener.onLearnMoreButtonClicked(holder.getBindingAdapterPosition());
                }
            });
        }
    }

    // 아이템의 수
    @Override
    public int getItemCount() {
        return mDataList.size();
    }

    // 각각의 아이템의 레퍼런스를 저장할 뷰 홀더 클래스
    // 반드시 RecyclerView.ViewHolder를 상속해야 함
    public static class ViewHolder extends RecyclerView.ViewHolder {

        TextView title;
        TextView contents;

        Button share;
        Button more;

        public ViewHolder(View itemView) {
            super(itemView);
            title = (TextView) itemView.findViewById(R.id.title_text);
            contents = (TextView) itemView.findViewById(R.id.contents_text);

            share = (Button) itemView.findViewById(R.id.share_button);
            more = (Button) itemView.findViewById(R.id.more_button);

        }
    }

    public void setOnClickListener(MyRecyclerViewClickListener listener) {
        mListener = listener;
    }

    public interface MyRecyclerViewClickListener {
        // 아이템 전체 부분의 클릭
        void onItemClicked(int position);

        // Share 버튼 클릭
        void onShareButtonClicked(int position);

        // Learn More 버튼 클릭
        void onLearnMoreButtonClicked(int position);
    }

    public void removeItem(int position) {
        mDataList.remove(position);
        notifyItemRemoved(position);
        //notifyItemRangeChanged(position, mDataList.size());
    }

    public void addItem(int position, CardItem item) {
        mDataList.add(position, item);
        notifyItemInserted(position);
        notifyItemRangeChanged(position, mDataList.size());
    }
}

 

 

 

public class MainActivity extends AppCompatActivity implements MyRecyclerAdapter.MyRecyclerViewClickListener {

    private static final String TAG = MainActivity.class.getSimpleName();
    private MyRecyclerAdapter mAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        recyclerView.setHasFixedSize(false);

        // 레이아웃 매니저로 LinearLayoutManager를 설정
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
//        GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
//        StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(layoutManager);

        // 표시할 임시 데이터
        List<CardItem> dataList = new ArrayList<>();
        dataList.add(new CardItem("이것은 첫번째 아이템", "안드로이드 보이라고 합니다"));
        dataList.add(new CardItem("이것은 세번째 아이템", "이번엔 세줄\n두번째 줄\n세번째 줄 입니다"));
        dataList.add(new CardItem("이것은 두번째 아이템", "두 줄 입력도 해 볼게요\n두 줄 입니다"));
        dataList.add(new CardItem("이것은 네번째 아이템", "잘 되네요"));

        // 어댑터 설정
        mAdapter = new MyRecyclerAdapter(dataList);
        mAdapter.setOnClickListener(this);
        recyclerView.setAdapter(mAdapter);

        // ItemAnimator
        DefaultItemAnimator animator = new DefaultItemAnimator();
        animator.setAddDuration(1000);
        animator.setRemoveDuration(1000);
        animator.setMoveDuration(1000);
        animator.setChangeDuration(1000);
        recyclerView.setItemAnimator(animator);

        // ItemDecoration
        DividerItemDecoration decoration = new DividerItemDecoration(this, layoutManager.getOrientation());
        recyclerView.addItemDecoration(decoration);
    }

    @Override
    public void onItemClicked(int position) {
        Log.d(TAG, "onItemClicked: " + position);
    }

    @Override
    public void onShareButtonClicked(int position) {
        Log.d(TAG, "onShareButtonClicked: " + position);

        mAdapter.addItem(position, new CardItem("추가 됨", "추가 됨"));
    }

    @Override
    public void onLearnMoreButtonClicked(int position) {
        Log.d(TAG, "onLearnMoreButtonClicked: " + position);

        // 아이템 삭제
        mAdapter.removeItem(position);
    }
}

 

https://stackoverflow.com/questions/32720702/how-to-call-a-mainactivity-method-from-viewholder-in-recyclerview-adapter

 

 

 

될 때까지 안드로이드 #33 [30장 생산성을 높이는 라이브러리 – Realm]

 

https://realm.io/kr/docs/java/latest

 

// 프로젝트 레벨
dependencies {
    classpath "io.realm:realm-gradle-plugin:3.5.0"

 

 

 

// app 레벨
apply plugin: 'realm-android'

 

 

 

public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        Realm.init(this);
        RealmConfiguration realmConfiguration = new RealmConfiguration.Builder().build();
        Realm.setDefaultConfiguration(realmConfiguration);
    }
}

 

 

 

<application
    android:name=".MyApplication"

 

 

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <EditText
        android:id="@+id/email_edit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="email"
        android:inputType="textEmailAddress" />

    <EditText
        android:id="@+id/password_edit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="password"
        android:inputType="textPassword" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="SignIn"
        android:text="로그인" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="SignUp"
        android:text="가입" />


    <EditText
        android:id="@+id/new_password_edit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="수정할 비밀번호" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="updatePassword"
        android:text="비번 수정" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="deleteAccount"
        android:text="탈퇴" />

    <TextView
        android:id="@+id/result_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp" />

</LinearLayout>

 

 

models/User.java

 

public class User extends RealmObject {

    private String email;
    private String password;

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "User{" +
                "email='" + email + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

 

 

 

public class MainActivity extends AppCompatActivity implements RealmChangeListener<Realm> {

    private EditText mEmail;
    private EditText mPassword;
    private EditText mNewPassword;
    private TextView mResultText;
    private Realm mRealm;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mEmail = (EditText) findViewById(R.id.email_edit);
        mPassword = (EditText) findViewById(R.id.password_edit);
        mNewPassword = (EditText) findViewById(R.id.new_password_edit);
        mResultText = (TextView) findViewById(R.id.result_text);

        mRealm = Realm.getDefaultInstance();
        mRealm.addChangeListener(this);

        showResult();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mRealm.removeAllChangeListeners();
        mRealm.close();
    }

    public void SignIn(View view) {
        String email = mEmail.getText().toString();
        String password = mPassword.getText().toString();

        User user = mRealm.where(User.class)
                .equalTo("email", email)
                .equalTo("password", password)
                .findFirst();

        if (user != null) {
            Toast.makeText(this, "성공", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(this, "실패", Toast.LENGTH_SHORT).show();
        }
    }

    // 회원가입
    public void SignUp(View view) {
        mRealm.executeTransactionAsync(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {

                if (realm.where(User.class).equalTo("email", mEmail.getText().toString()).count() > 0) {
                    realm.cancelTransaction();
                }

                User user = realm.createObject(User.class);
                user.setEmail(mEmail.getText().toString());
                user.setPassword(mPassword.getText().toString());
            }
        }, new Realm.Transaction.OnSuccess() {
            @Override
            public void onSuccess() {
                Toast.makeText(MainActivity.this, "성공", Toast.LENGTH_SHORT).show();
            }
        }, new Realm.Transaction.OnError() {
            @Override
            public void onError(Throwable error) {
                Toast.makeText(MainActivity.this, "실패", Toast.LENGTH_SHORT).show();
            }
        });

    }

    public void deleteAccount(View view) {
        final RealmResults<User> results = mRealm.where(User.class).equalTo("email", mEmail.getText().toString()).findAll();

        mRealm.executeTransaction(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {
                results.deleteAllFromRealm();
            }
        });
    }

    public void updatePassword(View view) {
        final User user = mRealm.where(User.class).equalTo("email", mEmail.getText().toString()).findFirst();

        mRealm.executeTransaction(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {
                user.setPassword(mNewPassword.getText().toString());
            }
        });
    }

    private void showResult() {
        RealmResults<User> userList = mRealm.where(User.class).findAll();
        mResultText.setText(userList.toString());
    }

    @Override
    public void onChange(Realm element) {
        showResult();
    }
}

 

 

 

 

될 때까지 안드로이드 (오준석의 생존코딩) 유튜브 강의
https://www.youtube.com/watch?v=euTtMnN-TgI&list=PLxTmPHxRH3VWTd-8KB67Itegihkl4SVKe&index=2

 

될 때까지 안드로이드 (오준석의 생존코딩) 깃헙
https://github.com/junsuk5/android-first-book

 

될 때까지 안드로이드 소스 다운로드
android-first-book-master.zip

 

 

Related posts

디모의 Kotlin 강좌

Android

디모의 Kotlin 강좌

    https://www.youtube.com/watch?v=8RIsukgeUVw&list=PLQdnHjXZyYadiw5aV3p6DwUdXV2bZuhlN&index=1 https://play.kotlinlang.org/   코틀린의 시작 변수와 자료형     2. 변수와 자료형   주석 // 한 줄 /* 주석...

안드로이드, 코틀린 강의 – Code with Joyce

Android

안드로이드, 코틀린 강의 – Code with Joyce

  강의1. 코틀린 3강으로 끝내기 강의2. 안드로이드 부트캠프 강의3. 조이스의 코틀린 안드로이드 1강     강의1. 코틀린 3강으로 끝내기   #...

안드로이드 앱개발 뽀개기 씨리즈 – 개발하는 정대리

Android

안드로이드 앱개발 뽀개기 씨리즈 – 개발하는 정대리

  https://www.youtube.com/watch?v=32SGwgbUSYw&list=PLgOlaPUIbynrDSTJxS8AaE-2zYvPCjWtF&index=1       안드로이드개발 시작하기 / 초보개발자 / 기본 튜토리얼 / 코틀린 / 앱만들기 안드로이드개발 시작하기 #2 / 초보개발자...

Leave a Comment