public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG = "MainActivity";
Context mContext;
Button popup_alert;
String select_filePath;
ScrollView pScrollView;
View popupView;
private static final int READ_REQUEST_CODE = 42;
protected View mPopupView; // 팝업 뷰
private void initView() {
// 1. 특정 폴더에 있는 파일 읽어서 미리보기 화면에 보여주기
popup_alert = findViewById(R.id.btn_fileread);
popup_alert.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.btn_fileread:
popupView = view;
showFileChooser();
break;
}
}
private void showFileChooser() {
Intent intent;
if (android.os.Build.MANUFACTURER.equalsIgnoreCase("samsung")) {
intent = new Intent("com.sec.android.app.myfiles.PICK_DATA");
intent.putExtra("CONTENT_TYPE", "*/*");
intent.addCategory(Intent.CATEGORY_DEFAULT);
} else {
String[] mimeTypes =
{"application/msword", "application/vnd.openxmlformats-officedocument.wordprocessingml.document", // .doc & .docx
"application/vnd.ms-powerpoint", "application/vnd.openxmlformats-officedocument.presentationml.presentation", // .ppt & .pptx
"application/vnd.ms-excel", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", // .xls & .xlsx
"text/plain",
"application/pdf",
"application/zip", "application/vnd.android.package-archive"};
intent = new Intent(Intent.ACTION_GET_CONTENT); // or ACTION_OPEN_DOCUMENT
intent.setType("*/*");
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
}
try {
startActivityForResult(Intent.createChooser(intent, "Select a File"), READ_REQUEST_CODE);
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(this, "Please install a File Manager.",Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case READ_REQUEST_CODE:
if (resultCode == RESULT_OK) {
// Get the Uri of the selected file
Uri uri = data.getData();
select_filePath = getRealPathFromURI(uri); // 이 함수를 다른 걸로 대체하는게 공부
Log.e(TAG, "file_path = " + select_filePath);
if(select_filePath != null){
mPopupWindowShow(readFile(select_filePath));
}
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
private String getRealPathFromURI(Uri uri) {
String filePath = "";
filePath = uri.getPath();
//경로에 /storage가 들어가면 real file path로 판단
if (filePath.startsWith("/storage"))
return filePath;
String wholeID = DocumentsContract.getDocumentId(uri);
//wholeID는 파일명이 abc.zip이라면 /document/B5D7-1CE9:abc.zip와 같다.
// Split at colon, use second item in the array
String id = wholeID.split(":")[1];
Log.e(TAG, "id = " + id);
String[] column = { MediaStore.Files.FileColumns.DATA };
//파일의 이름을 통해 where 조건식을 만든다.
String sel = MediaStore.Files.FileColumns.DATA + " LIKE '%" + id + "%'";
//External storage에 있는 파일의 DB를 접근하는 방법이다.
Cursor cursor = getContentResolver().query(MediaStore.Files.getContentUri("external"),
column, sel, null, null);
int columnIndex = cursor.getColumnIndex(column[0]);
if (cursor.moveToFirst()) {
filePath = cursor.getString(columnIndex);
}
cursor.close();
return filePath;
}
private String readFile(String filepath) {
File fileEvents = new File(filepath);
StringBuilder text = new StringBuilder();
try {
BufferedReader br = new BufferedReader(new FileReader(fileEvents));
String line;
while ((line = br.readLine()) != null) {
text.append(line);
text.append('\n');
}
br.close();
} catch (IOException e) { }
String result = text.toString();
return result;
}
public void mPopupWindowShow(String url) {
Display display = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
Point point = new Point();
display.getSize(point);
int height = (int) (point.y * 0.8);
int width = (int) (point.x * 0.9); // Display 사이즈의 90%
// inflate the layout of the popup window
LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.popup_window,null);
mPopupView = layout.findViewById(R.id.linear_layout);
TextView popupTitle = layout.findViewById(R.id.popupTitle);
popupTitle.setText("내용 미리보기");
TextView popupSave = layout.findViewById(R.id.popupSaveBtn);
TextView popupCancel = layout.findViewById(R.id.popupCancelBtn);
pScrollView = layout.findViewById(R.id.popupScrollView);
TextView popupContent = layout.findViewById(R.id.popupText);
popupContent.setText(url);
pScrollView.setVerticalScrollBarEnabled(true); // 수직방향 스크롤바 사용 가능하도록 설정
popupContent.setMovementMethod(new ScrollingMovementMethod());
popupContent.setTextSize(12);
// create the popup window
boolean focusable = true; // lets taps outside the popup also dismiss it
final PopupWindow popupWindow = new PopupWindow(mPopupView, width, height, focusable);
popupWindow.showAtLocation(popupView, Gravity.BOTTOM, 0, 0); // Parent View 로부터의 위치
popupSave.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext, "적용을 시작합니다.", Toast.LENGTH_SHORT).show();
}
});
popupCancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (popupWindow != null && popupWindow.isShowing()){
popupWindow.dismiss();
}
}
});
}
}
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