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(명시적 인텐트)Intent를 이용해 다른 액티비티와 데이터 송수신2

2019-12-08

boki

android

intent를 이용해서 두 액티비티 간에 데이터를 전송하고 계산된 값을 넘겨본다2

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".MainActivity">

    <EditText android:id="@+id/editNum1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="숫자1"
        android:inputType="number"/>

    <EditText android:id="@+id/editNum2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="숫자2"
        android:inputType="number"/>

    <Button android:id="@+id/btnCalc"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="두 숫자의 곱 계산"/>
</LinearLayout>

activity_sub.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView android:id="@+id/textNum1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="숫자1"
        android:textSize="16dp"/>
    <TextView android:id="@+id/textNum2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="숫자2"
        android:textSize="16dp"/>
    <Button android:id="@+id/btnQuit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="화면 닫기"/>
</LinearLayout>

MainActivity.java

package com.example.boki.datatrans;

import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private EditText mEditNum1;
    private EditText mEditNum2;
    private Button btnCalc;

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

        mEditNum1 = (EditText)findViewById(R.id.editNum1);
        mEditNum2 = (EditText)findViewById(R.id.editNum2);
        btnCalc = (Button)findViewById(R.id.btnCalc);

        btnCalc.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getApplicationContext(), SubActivity.class);
                intent.putExtra("num1", Integer.parseInt(mEditNum1.getText().toString()));
                intent.putExtra("num2", Integer.parseInt(mEditNum2.getText().toString()));
                startActivityForResult(intent, 0);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if(requestCode == 0 && resultCode == RESULT_OK) {
            int result = data.getIntExtra("result", 0);
            Toast.makeText(this, "두 숫자의 곱: " + result, Toast.LENGTH_SHORT).show();
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
}

SubActivity.java

package com.example.boki.datatrans;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.Locale;

public class SubActivity extends Activity {

    private int num1;
    private int num2;

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

        TextView textNum1 = (TextView)findViewById(R.id.textNum1);
        TextView textNum2 = (TextView)findViewById(R.id.textNum2);
        Button btnQuit = (Button)findViewById(R.id.btnQuit);

        Intent intent = getIntent();
        num1 = intent.getIntExtra("num1", -1);
        num2 = intent.getIntExtra("num2", -1);
        if ( num1 != -1 && num2 != -1) {
            textNum1.setText(String.format(Locale.KOREAN, "숫자1: %d", num1));
            textNum2.setText(String.format(Locale.KOREAN, "숫자2: %d", num2));
        }

        btnQuit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent data = new Intent();
                data.putExtra("result", num1 * num2);
                setResult(RESULT_OK, data);
                finish();
            }
        });
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.boki.datatrans">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".SubActivity"/>
    </application>

</manifest>

실행화면

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(명시적 인텐트)Intent를 이용해 다른 액티비티와 데이터 송수신1

2019-12-08

boki

android

Activity Intent data

intent를 이용해서 두 액티비티 간에 데이터를 전송하고 계산된 값을 넘겨본다

이제는 액티비티를 추가하면 AndroidManifest.xml에 새로운 액티비티 태그를 추가시켜줘야되는것을 알 것이다

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".MainActivity">

    <EditText android:id="@+id/edtNum1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="1번째 숫자"/>
    <EditText android:id="@+id/edtNum2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="2번째 숫자"/>
    <Button android:id="@+id/btnNewActivity"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="더하기"/>

</LinearLayout>

second.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <Button android:id="@+id/btnReturn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="돌아가기"/>
</LinearLayout>

SecondActivity.java

package com.example.boki.dataintent;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class SecondActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second);
        setTitle("Second 액티비티");

        Intent inIntent = getIntent();
        final int hapValue = inIntent.getIntExtra("Num1", 0) + inIntent.getIntExtra("Num2", 0);

        Button btnReturn = (Button)findViewById(R.id.btnReturn);
        btnReturn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent outIntent = new Intent(getApplicationContext(), MainActivity.class);
                outIntent.putExtra("Hap", hapValue);
                setResult(RESULT_OK, outIntent);
                finish();
            }
        });
    }
}

MainActivity.java

package com.example.boki.dataintent;

import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

        Button btnNewActivity = (Button)findViewById(R.id.btnNewActivity);
        btnNewActivity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                EditText edtNum1 = (EditText)findViewById(R.id.edtNum1);
                EditText edtNum2 = (EditText)findViewById(R.id.edtNum2);
                Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
                intent.putExtra("Num1",Integer.parseInt(edtNum1.getText().toString()));
                intent.putExtra("Num2",Integer.parseInt(edtNum2.getText().toString()));
                startActivityForResult(intent, 0);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode == RESULT_OK) {
            int hap = data.getIntExtra("Hap", 0);
            Toast.makeText(getApplicationContext(), "합계 :" +hap, Toast.LENGTH_SHORT).show();
        }
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.boki.dataintent">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".SecondActivity" android:label="Second 액티비티"/>
    </application>

</manifest>

실행화면

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간단한 암시적(Implicit) 인텐트 앱

2019-12-08

boki

android

Implicit Intent

implicit intent를 이용해서 여러가지 기능들을 동작해본다

먼저 AndroidManifest.xml에 uses-permission 권한을 3개 추가시켜준다

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.boki.implicitintent">
    <uses-permission android:name="android.permission.CALL_PHONE"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".MainActivity">

    <Button android:id="@+id/btnDial"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="전화 걸기"/>
    <Button android:id="@+id/btnWeb"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="홈페이지 열기"/>
    <Button android:id="@+id/btnGoogle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="구글 맵 열기"/>
    <Button android:id="@+id/btnSearch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="구글 검색하기"/>
    <Button android:id="@+id/btnSms"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="문자 보내기"/>
    <Button android:id="@+id/btnPhoto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="사진 찍기"/>

</LinearLayout>

MainActivity.java

package com.example.boki.implicitintent;

import android.app.SearchManager;
import android.content.Intent;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("암시적 인텐트 예제");

        Button btnDial = (Button)findViewById(R.id.btnDial);
        Button btnWeb = (Button)findViewById(R.id.btnWeb);
        Button btnGoogle = (Button)findViewById(R.id.btnGoogle);
        Button btnSearch = (Button)findViewById(R.id.btnSearch);
        Button btnSms = (Button)findViewById(R.id.btnSms);
        Button btnPhoto = (Button)findViewById(R.id.btnPhoto);

        btnDial.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = Uri.parse("tel:01012345678");
                Intent intent = new Intent(Intent.ACTION_DIAL, uri);
                startActivity(intent);
            }
        });

        btnWeb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = Uri.parse("http://www.hanbit.co.kr");
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });

        btnGoogle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = Uri.parse("http://maps.google.com/maps?q="+37.554264+","+126.913598);
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });

        btnSearch.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
                intent.putExtra(SearchManager.QUERY, "안드로이드");
                startActivity(intent);
            }
        });

        btnSms.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Intent.ACTION_SENDTO);
                intent.putExtra("sms_body", "안녕하세요?");
                intent.setData(Uri.parse("smsto:"+Uri.encode("010-1234-4567")));
                startActivity(intent);
            }
        });

        btnPhoto.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivity(intent);
            }
        });
    }
}

실행화면

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GirdView를 이용해 MoviePoster 만들기

2019-12-08

boki

android

GridView MoviePoster

GirdView를 이용해 영화 포스터 앱을 만들어보자

목표

영화 포스터

다른 이름으로 저장해서 다운받기를 바란다

mov01 mov02 mov03 mov04 mov05 mov06 mov07 mov08 mov09 mov10 mov11 mov12 mov13 mov14 mov15 mov16 mov17 mov18 mov19 mov20 mov21 mov22 mov23 mov24 mov25

아이콘

movie_icon

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".MainActivity">

    <GridView android:id="@+id/gridView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:numColumns="4">

    </GridView>
</LinearLayout>

dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <ImageView android:id="@+id/ivPoster"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

MainActivity.java

package com.example.boki.movieposter_gridview;

import android.content.Context;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("그리드뷰 영화 포스터");

        final GridView gv = (GridView) findViewById(R.id.gridView1);
        MyGridAdapter gAdapter = new MyGridAdapter(this);
        gv.setAdapter(gAdapter);
    }
    public class MyGridAdapter extends BaseAdapter {
        Context context;

        public MyGridAdapter(Context c) {
            context = c; // context 변수를 다른 메소드에서 사용하기 위함
        }

        @Override
        public int getCount() { // 그리드뷰에 보여질 이미지의 개수를 반환하도록 수정
            return posterID.length;
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        // 이미지 파일을 배열로 초기화
        Integer[] posterID = {R.drawable.mov01, R.drawable.mov02, R.drawable.mov03, R.drawable.mov04, R.drawable.mov05, R.drawable.mov06, R.drawable.mov07, R.drawable.mov08, R.drawable.mov09, R.drawable.mov10,
                R.drawable.mov11, R.drawable.mov12, R.drawable.mov13, R.drawable.mov14, R.drawable.mov15, R.drawable.mov16, R.drawable.mov17, R.drawable.mov18, R.drawable.mov19, R.drawable.mov20,
                R.drawable.mov21, R.drawable.mov22, R.drawable.mov23, R.drawable.mov24, R.drawable.mov25};

        // 영화제목을 문자 배열로 초기화
        String[] posterTitle = {"써니","완득이","괴물","라디오스타","비열한거리","왕의남자","아일랜드","웰컴투동막골","헬보이","빽투더퓨처","여인의향기","쥬라기공원","포레스트검프","그라운드데이","혹성탈출-진화의시작",
        "아름다운비행","내이름은칸","해리포터","마더","킹콩을들다","쿵푸팬더2","짱구는못말려-미래의신부를구하라","아저씨","아바타","대부"};
        @Override
        public View getView(int position, View convertView, ViewGroup parent) { // 영화 포스터를 각 그리드뷰의 칸마다 이미지뷰를 생성해서 보여주게 함
            ImageView imageView = new ImageView(context);
            imageView.setLayoutParams(new GridView.LayoutParams(200, 300));
            imageView.setScaleType(ImageView.ScaleType.FIT_CENTER); // 그리드뷰 칸의 중앙에 배치
            imageView.setPadding(5,5,5,5);

            imageView.setImageResource(posterID[position]); // R.drawable.mov0x 이미지를 로드하여 출력
            //TODO 이미지를 클릭했을 때, 원래 이미지 크기가 보이도록 함
            final int pos = position;
            imageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    View dialogView = (View)View.inflate(MainActivity.this, R.layout.dialog, null);
                    AlertDialog.Builder dlg = new AlertDialog.Builder(MainActivity.this);
                    ImageView ivPoster = (ImageView)dialogView.findViewById(R.id.ivPoster);
                    ivPoster.setImageResource(posterID[pos]);
                    dlg.setTitle(posterTitle[pos]);
                    dlg.setIcon(R.drawable.movie_icon);
                    dlg.setView(dialogView);
                    dlg.setNegativeButton("닫기", null);
                    dlg.show();
                }
            });
            return imageView;
        }
    }
}

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XML을 이용한 컨텍스트 메뉴 만들기

2019-12-08

boki

android

ContextMenu

res 밑에 menu 폴더(directory)를 만들고, menu1.xml, menu2.xml을 만들어준다

menu1.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/itemRed"
        android:title="배경색(빨강)"/>
    <item android:id="@+id/itemGreen"
        android:title="배경색(초록)"/>
    <item android:id="@+id/itemBlue"
        android:title="배경색(파랑)"/>
</menu>

menu2.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/subRotate"
        android:title="버튼 45도 회전"/>
    <item android:id="@+id/subSize"
        android:title="버튼 2개 확대"/>
</menu>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout android:id="@+id/baseLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:gravity="center_horizontal">
        <Button android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="배경색 변경"/>
        <Button android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="버튼 변경"/>
    </LinearLayout>

</LinearLayout>

MainActivity.java

package com.example.boki.contextmenuusingxml;

import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity {

    LinearLayout baseLayout;
    Button button1, button2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("배경색 바꾸기(컨텍스트 메뉴)");
        baseLayout = (LinearLayout)findViewById(R.id.baseLayout);
        button1 = (Button)findViewById(R.id.button1);
        button2 = (Button)findViewById(R.id.button2);
        registerForContextMenu(button1);
        registerForContextMenu(button2);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        MenuInflater mInflater = getMenuInflater();
        if (v == button1) {
            menu.setHeaderTitle("배경색 변경");
            mInflater.inflate(R.menu.menu1, menu);
        }
        if (v == button2) {
            menu.setHeaderTitle("버튼 변경");
            mInflater.inflate(R.menu.menu2, menu);
        }
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
//        return super.onContextItemSelected(item);
        switch (item.getItemId()) {
            case R.id.itemRed:
                baseLayout.setBackgroundColor(Color.RED);
                return true;
            case R.id.itemGreen:
                baseLayout.setBackgroundColor(Color.GREEN);
                return true;
            case R.id.itemBlue:
                baseLayout.setBackgroundColor(Color.BLUE);
                return true;
            case R.id.subRotate:
                button1.setRotation(45);
                button2.setRotation(45);
                return true;
            case R.id.subSize:
                button1.setScaleX(2);
                button2.setScaleY(2);
                return true;
        } return false;
    }
}

결과 화면

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ImageView를 이용하지않고 Bitmap을 이용해서 이미지 출력

2019-12-08

boki

android

Bitmap BitmapFactory MyGraphicView

View 클래스를 상속받아 새로운 클래스를 만들고 onDraw를 재정의해준다

미리 자신이 준비한 그림파일들을 drawble 폴더에 넣어주자

파일 Ctrl+C 해주고 자기만의 IDE에서 drawable 폴더를 선택한 채로 Ctrl+V해주면 된다

이름을 클릭하면 원본 크기로 파일을 다운받을 수 있다

jeju14 jeju14

activity_main.xml

필요없다~! java에서 View를 커스터마이징해줄거니깐

MainActivity.java

package com.example.boki.basicbitmap;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//        setContentView(R.layout.activity_main);
        //TODO 클래스를 직접 setContentView할거임
        setContentView(new MyGraphicView(this));
    }

    private static class MyGraphicView extends View {
        public MyGraphicView(Context context) {
            super(context);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);
            Bitmap picture = BitmapFactory.decodeResource(getResources(),R.drawable.jeju14);
            int picX = (this.getWidth() - picture.getWidth()) / 2;
            int picY = (this.getHeight() - picture.getHeight()) / 2;
            canvas.drawBitmap(picture, picX, picY, null);
            picture.recycle();
        }
    }
}

실행화면

Read All

5/7

Welcome to Boki's Blog!!

(명시적 인텐트)Intent를 이용해 다른 액티비티와 데이터 송수신2

intent를 이용해서 두 액티비티 간에 데이터를 전송하고 계산된 값을 넘겨본다2

실행화면

(명시적 인텐트)Intent를 이용해 다른 액티비티와 데이터 송수신1

intent를 이용해서 두 액티비티 간에 데이터를 전송하고 계산된 값을 넘겨본다

실행화면

간단한 암시적(Implicit) 인텐트 앱

implicit intent를 이용해서 여러가지 기능들을 동작해본다

실행화면

GirdView를 이용해 MoviePoster 만들기

GirdView를 이용해 영화 포스터 앱을 만들어보자

다른 이름으로 저장해서 다운받기를 바란다

XML을 이용한 컨텍스트 메뉴 만들기

menu xml들을 이용해서 contextMenu를 만들어보자

결과 화면

ImageView를 이용하지않고 Bitmap을 이용해서 이미지 출력

View 클래스를 상속받아 새로운 클래스를 만들고 onDraw를 재정의해준다

미리 자신이 준비한 그림파일들을 drawble 폴더에 넣어주자

파일 Ctrl+C 해주고 자기만의 IDE에서 drawable 폴더를 선택한 채로 Ctrl+V해주면 된다

실행화면