[Android/Java] 갤러리 열고 그리기 MediaStore, bitmap

Demo

구성

• permission
• activity
• layout

 

- [AndroidMaifest.xml]

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

 

 

- [UploadNotice.java]

package com.sjcoding.admincollegeapp;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.cardview.widget.CardView;

import java.io.IOException;

public class UploadNotice extends AppCompatActivity {
    private CardView addImage; // 클릭 버튼
    private ImageView noticeImageView; // 가져온 사진 그릴 공간
    private final int REQ = 1000; // 응답
    private Bitmap bitmap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_upload_notice);
        noticeImageView = (ImageView) findViewById(R.id.iv_notice);

        addImage = findViewById(R.id.add_image);
        addImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openGallery();
            }
        });
    }

    // gallery 열기
    private void openGallery() {
        Intent pickImage = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(pickImage, REQ);
    }

    // 결과값 bitmap 변환
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == REQ && resultCode == Activity.RESULT_OK) {
            Uri uri = data.getData();
            try {
                bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
            } catch (IOException e) {
                e.printStackTrace();
            }
            noticeImageView.setImageBitmap(bitmap);
        }
    }
}

 

- [activity_upload_notice.xml]

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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=".UploadNotice"
    android:padding="16dp">

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

        <com.google.android.material.card.MaterialCardView
            android:layout_width="130dp"
            android:layout_height="150dp"
            android:layout_margin="10dp"
            android:id="@+id/add_image"
            app:cardElevation="5dp"
            android:layout_gravity="center">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical"
                android:gravity="center">
                <ImageView
                    android:layout_width="64dp"
                    android:layout_height="64dp"
                    android:background='@drawable/circle_purple'
                    android:src="@drawable/ic_notice"
                    android:padding="15dp"/>
                <View
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:background="@color/lightGray"
                    android:layout_marginTop="10dp"/>
                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Select Image"
                    android:textStyle="bold"
                    android:padding="5dp"
                    android:layout_marginTop="10dp"
                    android:textColor="@color/textColor"/>

            </LinearLayout>

        </com.google.android.material.card.MaterialCardView>

        <com.google.android.material.textfield.TextInputLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginTop="16dp"
            style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox">
            <com.google.android.material.textfield.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="Notice title"
                android:id="@+id/notice_title"/>
        </com.google.android.material.textfield.TextInputLayout>
        <com.google.android.material.button.MaterialButton
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Upload Notice"
            android:layout_marginTop="16dp"
            android:textAllCaps="false"
            android:id="@+id/btn_upload_notice"/>
        <com.google.android.material.card.MaterialCardView
            android:layout_width="match_parent"
            android:layout_height="400dp">
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:scaleType="centerCrop"
                android:id="@+id/iv_notice"/>
        </com.google.android.material.card.MaterialCardView>


    </LinearLayout>
</ScrollView>