카테고리 없음
안드로이드 /이미지/ 인텐트/ 받아서 표시하기
LODE_RUNNER
2020. 7. 9. 19:49
IMage Application.zip
0.15MB
티스토리 가입 기념 , 첫 포스팅
ㅡ 안드로이드/자바에서 이미지 표시하기
ㅡ 요점은 이미지 뷰 사용법이 아니라,
ㅡ 이미지 파일들을 인텐트로 요청하고 받아서
ㅡ 받은 url 정보를 해석하여
ㅡ 비트맵으로 변환하는 과정
ㅡ 이러한 해설은, 안드로이드 매뉴얼의 이미지 단원이나 인텐트 단원에 있지 않고
ㅡ "콘텐트 프로바이더 / 저장소 액세스 프레임워크를 사용하여 파일 열기" 해설 부분(링크)에 있슴
ㅡ 초심자가 여기까지 독학으로 오려면 몇달 걸리게 됨
ㅡ 소스 해설 생략 / 링크에 안내된 해설 참조 / 첨부 파일을 통째로 실행해 보세요
요점 :https://developer.android.com/guide/topics/providers/document-provider
| MainActivity.java |
// MainActivity.java
//
package com.example.imageapplication;
// import 생략
public class MainActivity extends AppCompatActivity {
private static final int GPS_ENABLE_REQUEST_CODE = 2001;
private static final int REQUEST_IMAGE_CAPTURE = 1 ;
private static final int PERMISSIONS_REQUEST_CODE = 100;
private static final int PICK_FROM_CAMERA = 0;
private static final int PICK_FROM_ALBUM = 1;
private static final int CROP_FROM_CAMERA = 2;
private static final int GET_GALLERY_IMAGE = 200;
private static final int REQUEST_TAKE_ALBUM = 103 ;
private static final int READ_REQUEST_CODE = 42;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.permitDiskReads()
.permitDiskWrites()
.permitNetwork().build());
TextView textView = (TextView) findViewById(R.id.textView);
textView.setText("******** 이미지 데모 ********\n");
Button ButtonR = (Button) findViewById(R.id.ButtonR);
Button ButtonL = (Button) findViewById(R.id.ButtonL);
// *******************************************************************************
// https://developer.android.com/guide/topics/providers/document-provider
ButtonL.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
final CharSequence[] SysSetUpItems =
{ "0 : image binary 보내기",
"1 : ACTION_GET_CONTENT 가져오기",
"2 : ACTION_OPEN_DOCUMENT 가져오기" } ;
AlertDialog.Builder SysSetUpDialog = new AlertDialog.Builder(MainActivity.this,
android.R.style.Theme_DeviceDefault_Light_Dialog_Alert);
SysSetUpDialog.setTitle("다음 중 선택하세요")
.setItems(SysSetUpItems, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0: // 이미지 데이타 등 바이너리 콘텐츠 보내기
String uriToImage = null;
Intent shareIntent2 = new Intent();
shareIntent2.setAction(Intent.ACTION_SEND);
shareIntent2.putExtra(Intent.EXTRA_STREAM, uriToImage);
shareIntent2.setType("image/jpeg");
startActivity(Intent.createChooser(shareIntent2, "abcd"));
break;
case 1: //
// READ_REQUEST_CODE = 42;
Intent intent1 = new Intent(Intent.ACTION_GET_CONTENT);
intent1.addCategory(Intent.CATEGORY_OPENABLE);
intent1.setType("image/*");
startActivityForResult(intent1, 42); // READ_REQUEST_CODE
break;
case 2: //
// READ_REQUEST_CODE = 42;
Intent intent2 = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent2.addCategory(Intent.CATEGORY_OPENABLE);
intent2.setType("image/*");
startActivityForResult(intent2, 42); // READ_REQUEST_CODE
break;
default:
break;
}
}
})
.setCancelable(true)
.show();
}
});
// *******************************************************************************
ButtonR.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
final CharSequence[] SysSetUpItems = {"0","1", "2", "3","4","5" } ;
AlertDialog.Builder SysSetUpDialog = new AlertDialog.Builder(MainActivity.this,
android.R.style.Theme_DeviceDefault_Light_Dialog_Alert);
SysSetUpDialog.setTitle("다음 중 선택하세요")
.setItems(SysSetUpItems, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0: // System.exit(0)
Intent intent0 = new Intent();
intent0 = new Intent(Intent.ACTION_PICK);
intent0.setType(android.provider.MediaStore.Images.Media.CONTENT_TYPE);
startActivityForResult(intent0, 1);
break;
case 1:
Intent intent1 = new Intent();
intent1.setAction(Intent.ACTION_PICK);
intent1.setType("image/*");
startActivityForResult(intent1, 1);
break;
case 2:
Intent intent2 = new Intent();
intent2.setAction(Intent.ACTION_GET_CONTENT);
intent2.setType("image/*");
startActivityForResult(intent2, 1);
break;
case 3:
Intent intent3 = new Intent();
intent3.setAction(Intent.ACTION_GET_CONTENT);
intent3.setType(android.provider.MediaStore.Images.Media.CONTENT_TYPE);
startActivityForResult(intent3, 1);
break;
case 4:
Intent intent4 = new Intent(Intent.ACTION_PICK);
intent4. setDataAndType(android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
startActivityForResult(intent4, GET_GALLERY_IMAGE); // 200
break;
case 5:
Intent intent5 = new Intent();
intent5.setAction(Intent.ACTION_GET_CONTENT); // ACTION_PICK은 사용하지 말것, deprecated + formally
intent5.setType("image/*");
((Activity)MainActivity.this).startActivityForResult(Intent.createChooser(intent5, "Get Album"), REQUEST_TAKE_ALBUM);
break;
default:
break;
}
}
})
.setCancelable(true)
.show();
}
});
}
// **********************************************
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// **********************************************
super.onActivityResult(requestCode, resultCode, data);
if (resultCode != RESULT_OK) {
return;
}
// Intent intent = getIntent();
// Uri data = intent.getData();
Log.d(" onActivityResult ", " requestCode: " + requestCode);
switch (requestCode) {
case 42 : // READ_REQUEST_CODE
Uri uri = null;
if (data != null) {
uri = data.getData();
Log.i("********* Image Test ********* ", "Uri: " + uri.toString());
try {
showImage(uri);
} catch (IOException e) {
e.printStackTrace();
}
};
break;
default:
throw new IllegalStateException("Unexpected value: " + requestCode);
}
} ;
public void showImage(final Uri uri) throws IOException {
Thread bm_thread = new Thread() {
@Override
public void run() {
runOnUiThread(new Runnable() {
@SuppressLint("WrongViewCast")
@Override
public void run() {
try {
Bitmap bm = getBitmapFromUri(uri) ;
ImageView imageView = (ImageView) findViewById(R.id.imageView) ;
imageView.setImageBitmap (bm);
} catch (IOException e) {
e.printStackTrace();
}
}
}) ; }};
bm_thread.start();
}
public Bitmap getBitmapFromUri(Uri uri) throws IOException {
ParcelFileDescriptor parcelFileDescriptor =
getContentResolver().openFileDescriptor(uri, "r");
FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
Bitmap image = BitmapFactory.decodeFileDescriptor(fileDescriptor);
parcelFileDescriptor.close();
return image;
}
}Activity_Main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/ButtonL"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/ButtonL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ButtonL"
app:layout_constraintBottom_toTopOf="@+id/textView"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="@+id/ButtonR"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ButtonR"
app:layout_constraintBottom_toBottomOf="@+id/ButtonL"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="@+id/ButtonL"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/textView"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:layout_weight="1.0"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.imageapplication">
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GPS_ENABLE_REQUEST_CODE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.FLAG_GRANT_READ_URI_PERMISSION"/>
<uses-permission android:name="android.permission.FLAG_GRANT_WRITE_URI_PERMISSION"/>
<uses-permission android:name="android.permission.READ_USER_DICTIONARY"/>
<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>
<intent-filter>
<action
android:name="android.intent.action.PICK"/>
<category
android:name="android.intent.category.DEFAULT"/>
<category
android:name="android.intent.category.OPENABLE"/>
<data android:mimeType="text/plain"/>
<data android:mimeType="image/*"/>
</intent-filter>
<intent-filter>
<action android:name="android.media.action.IMAGE_CAPTURE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.GET_CONTENT" />
<!-- <data android:type="image/*" /> -->
<category android:name="android.intent.category.DEFAULT" />
<!-- The OPENABLE category declares that the returned file is accessible
from a content provider that supports OpenableColumns
and ContentResolver.openFileDescriptor() -->
<category android:name="android.intent.category.OPENABLE" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="image/*" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND_MULTIPLE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="image/*" />
</intent-filter>
</activity>
</application>
</manifest>
기타1
기타2
developer.android.com/reference/android/os/AsyncTask
기타3
developer.android.com/training/data-storage/files/external-scoped?hl=ko#java
기타4
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