Use view binding in more activities (#2052)

# Description
Use view binding in more activities:
* QRScannerActivity
* ShareActivity
* PullOrderDialogActivity

Rename also a couple of xml layout files from `fragment_xyz` to
`activity_xyz` as they are being used inside activities.

app/src/main/java/com/nutomic/syncthingandroid/activities/PullOrderDialogActivity.java

@@ -5,10 +5,7 @@
 import android.os.Bundle;
 import android.view.View;
 import android.widget.AdapterView;
-import android.widget.Button;
-import android.widget.Spinner;
-import com.nutomic.syncthingandroid.R;
-
+import com.nutomic.syncthingandroid.databinding.ActivityPullorderDialogBinding;
 import java.util.Arrays;
 import java.util.List;
 
@@ -19,6 +16,8 @@ public class PullOrderDialogActivity extends ThemedAppCompatActivity {
 
     private String selectedType;
 
+    private ActivityPullorderDialogBinding binding;
+
     private static final List<String> mTypes = Arrays.asList(
         "random",
         "alphabetic",
@@ -31,7 +30,8 @@ public class PullOrderDialogActivity extends ThemedAppCompatActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.fragment_pullorder_dialog);
+        binding = ActivityPullorderDialogBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
         if (savedInstanceState == null) {
             selectedType = getIntent().getStringExtra(EXTRA_PULL_ORDER);
         }
@@ -40,8 +40,7 @@ protected void onCreate(Bundle savedInstanceState) {
     }
 
     private void initiateFinishBtn() {
-        Button finishBtn = findViewById(R.id.finish_btn);
-        finishBtn.setOnClickListener(v -> {
+        binding.finishBtn.setOnClickListener(v -> {
             saveConfiguration();
             finish();
         });
@@ -54,9 +53,8 @@ private void saveConfiguration() {
     }
 
     private void initiateSpinner() {
-        Spinner pullOrderTypeSpinner = findViewById(R.id.pullOrderTypeSpinner);
-        pullOrderTypeSpinner.setSelection(mTypes.indexOf(selectedType));
-        pullOrderTypeSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+        binding.pullOrderTypeSpinner.setSelection(mTypes.indexOf(selectedType));
+        binding.pullOrderTypeSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 if (position != mTypes.indexOf(selectedType)) {

app/src/main/java/com/nutomic/syncthingandroid/activities/QRScannerActivity.java

@@ -6,19 +6,15 @@
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
-import android.util.Log;
-import android.widget.TextView;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
-
 import com.google.zxing.ResultPoint;
 import com.journeyapps.barcodescanner.BarcodeCallback;
 import com.journeyapps.barcodescanner.BarcodeResult;
-import com.journeyapps.barcodescanner.DecoratedBarcodeView;
 import com.nutomic.syncthingandroid.R;
+import com.nutomic.syncthingandroid.databinding.ActivityQrScannerBinding;
 
 import java.util.List;
 
@@ -33,17 +29,16 @@ static Intent intent(Context context) {
 
     private final int RC_HANDLE_CAMERA_PERM = 888;
 
-    private DecoratedBarcodeView barcodeView;
+    private ActivityQrScannerBinding binding;
 
     // region === Activity Lifecycle ===
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.fragment_qr_scanner);
-
-        this.barcodeView = findViewById(R.id.bar_code_scanner_view);
+        binding = ActivityQrScannerBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
 
-        findViewById(R.id.cancel_button).setOnClickListener(view -> {
+        binding.cancelButton.setOnClickListener(view -> {
             finishScanning();
         });
 
@@ -98,12 +93,12 @@ private void checkPermissionAndStartScanner() {
     }
 
     private void startScanner() {
-        this.barcodeView.resume();
-        this.barcodeView.decodeSingle(this);
+        binding.barCodeScannerView.resume();
+        binding.barCodeScannerView.decodeSingle(this);
     }
 
     private void finishScanning() {
-        this.barcodeView.pause();
+        binding.barCodeScannerView.pause();
         finish();
     }
     // endregion

app/src/main/java/com/nutomic/syncthingandroid/activities/ShareActivity.java

@@ -1,5 +1,7 @@
 package com.nutomic.syncthingandroid.activities;
 
+import static android.view.WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN;
+
 import android.app.ProgressDialog;
 import android.content.ContentResolver;
 import android.content.Intent;
@@ -15,14 +17,13 @@
 import android.webkit.MimeTypeMap;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
-import android.widget.Button;
-import android.widget.EditText;
 import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import com.google.common.io.Files;
 import com.nutomic.syncthingandroid.R;
+import com.nutomic.syncthingandroid.databinding.ActivityShareBinding;
 import com.nutomic.syncthingandroid.model.Folder;
 import com.nutomic.syncthingandroid.service.SyncthingService;
 import com.nutomic.syncthingandroid.util.Util;
@@ -39,8 +40,6 @@
 import java.util.List;
 import java.util.Map;
 
-import static android.view.WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN;
-
 /**
  * Shares incoming files to syncthing folders.
  * <p>
@@ -59,6 +58,8 @@ public class ShareActivity extends StateDialogActivity
 
     private Spinner mFoldersSpinner;
 
+    private ActivityShareBinding binding;
+
     @Override
     public void onServiceStateChange(SyncthingService.State currentState) {
         if (currentState != SyncthingService.State.ACTIVE || getApi() == null)
@@ -81,9 +82,8 @@ public void onServiceStateChange(SyncthingService.State currentState) {
                 this, android.R.layout.simple_spinner_item, folders);
 
         adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        Spinner sItems = findViewById(R.id.folders);
-        sItems.setAdapter(adapter);
-        sItems.setSelection(folderIndex);
+        binding.folders.setAdapter(adapter);
+        binding.folders.setSelection(folderIndex);
     }
 
     @Override
@@ -102,18 +102,13 @@ protected void onPostCreate(Bundle savedInstanceState) {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_share);
+        binding = ActivityShareBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
 
         getWindow().setSoftInputMode(SOFT_INPUT_STATE_ALWAYS_HIDDEN);
 
         registerOnServiceConnectedListener(this);
 
-        Button mShareButton = findViewById(R.id.share_button);
-        Button mCancelButton = findViewById(R.id.cancel_button);
-        Button browseButton = findViewById(R.id.browse_button);
-        EditText mShareName = findViewById(R.id.name);
-        TextView mShareTitle = findViewById(R.id.namesTitle);
-
         mSubDirectoryTextView = findViewById(R.id.sub_directory_Textview);
         mFoldersSpinner = findViewById(R.id.folders);
 
@@ -143,16 +138,16 @@ protected void onCreate(Bundle savedInstanceState) {
             files.put(sourceUri, displayName);
         }
 
-        mShareName.setText(TextUtils.join("\n", files.values()));
+        binding.name.setText(TextUtils.join("\n", files.values()));
         if (files.size() > 1) {
-            mShareName.setFocusable(false);
-            mShareName.setKeyListener(null);
+            binding.name.setFocusable(false);
+            binding.name.setKeyListener(null);
         }
-        mShareTitle.setText(getResources().getQuantityString(R.plurals.file_name_title,
+        binding.namesTitle.setText(getResources().getQuantityString(R.plurals.file_name_title,
                 files.size() > 1 ? 2 : 1));
-        mShareButton.setOnClickListener(view -> {
+        binding.shareButton.setOnClickListener(view -> {
             if (files.size() == 1)
-                files.entrySet().iterator().next().setValue(mShareName.getText().toString());
+                files.entrySet().iterator().next().setValue(binding.name.getText().toString());
             Folder folder = (Folder) mFoldersSpinner.getSelectedItem();
             File directory = new File(folder.path, getSavedSubDirectory());
             CopyFilesTask mCopyFilesTask = new CopyFilesTask(this, files, folder, directory);
@@ -171,15 +166,15 @@ public void onNothingSelected(AdapterView<?> parent) {
             }
         });
 
-        browseButton.setOnClickListener(view -> {
+        binding.browseButton.setOnClickListener(view -> {
             Folder folder = (Folder) mFoldersSpinner.getSelectedItem();
             File initialDirectory = new File(folder.path, getSavedSubDirectory());
             startActivityForResult(FolderPickerActivity.createIntent(getApplicationContext(),
                     initialDirectory.getAbsolutePath(), folder.path),
                     FolderPickerActivity.DIRECTORY_REQUEST_CODE);
         });
 
-        mCancelButton.setOnClickListener(view -> finish());
+        binding.cancelButton.setOnClickListener(view -> finish());
         mSubDirectoryTextView.setText(getSavedSubDirectory());
     }