[Android] Add shortcut to import game data

android-project/app/src/main/AndroidManifest.xml

@@ -79,11 +79,19 @@
                 <data android:mimeType="*/*" />
             </intent-filter>
             -->
+            <!-- Location where shortcuts for the app are defined -->
+            <meta-data
+                android:name="android.app.shortcuts"
+                android:resource="@xml/shortcuts" />
         </activity>
 
         <activity android:name=".DataActivity"
                 android:theme="@style/Theme.MyApplication">
         </activity>
+
+        <activity android:name=".ImportActivity"
+            android:theme="@style/Theme.MyApplication">
+        </activity>
     </application>
 
 </manifest>

android-project/app/src/main/java/org/diasurgical/devilutionx/ImportActivity.java

@@ -0,0 +1,93 @@
+package org.diasurgical.devilutionx;
+
+import android.app.Activity;
+import android.content.ClipData;
+import android.content.ContentResolver;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.annotation.Nullable;
+import android.os.Bundle;
+import android.support.v4.provider.DocumentFile;
+import android.util.Log;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Objects;
+
+public class ImportActivity extends Activity {
+
+	private static final int IMPORT_REQUEST_CODE = 0xD1AB70;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
+		intent.addCategory(Intent.CATEGORY_OPENABLE);
+		intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
+		intent.setType("*/*");
+		startActivityForResult(intent, IMPORT_REQUEST_CODE);
+	}
+
+	@Override
+	protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+		if (requestCode != IMPORT_REQUEST_CODE)
+			return;
+
+		if (resultCode == Activity.RESULT_OK && data != null) {
+			importFile(data.getData());
+			handleClipData(data.getClipData());
+		}
+
+		finish();
+	}
+
+	private void handleClipData(ClipData clipData) {
+		if (clipData == null)
+			return;
+
+		for (int i = 0; i < clipData.getItemCount(); i++) {
+			ClipData.Item item = clipData.getItemAt(i);
+			if (item == null)
+				continue;
+
+			importFile(item.getUri());
+		}
+	}
+
+	private void importFile(Uri fileUri) {
+		if (fileUri == null)
+			return;
+
+		DocumentFile file = DocumentFile.fromSingleUri(getApplicationContext(), fileUri);
+		String fileName = file.getName();
+		String externalFilesDir = getExternalFilesDir(null).getAbsolutePath();
+		String externalFilesPath = externalFilesDir + "/" + fileName;
+
+		try {
+			InputStream inputStream = null;
+			OutputStream outputStream = null;
+
+			try {
+				ContentResolver contentResolver = getContentResolver();
+				inputStream = contentResolver.openInputStream(fileUri);
+				outputStream = new FileOutputStream(externalFilesPath);
+
+				// Transfer bytes from in to out
+				byte[] buf = new byte[4096];
+				int len;
+				while ((len = inputStream.read(buf)) > 0) {
+					outputStream.write(buf, 0, len);
+				}
+			} finally {
+				if (inputStream != null)
+					inputStream.close();
+				if (outputStream != null)
+					outputStream.close();
+			}
+		} catch (IOException exception) {
+			Log.e("importFile", Objects.requireNonNull(exception.getMessage()));
+		}
+	}
+}

android-project/app/src/main/res/values/strings.xml

@@ -11,4 +11,5 @@
 	<string name="missing_game_data">Game data missing</string>
 	<string name="download_started">Download started</string>
 	<string name="shareware_data">Diablo Demo Data</string>
+	<string name="import_short_label">Import Data</string>
 </resources>

android-project/app/src/main/res/xml/shortcuts.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shortcuts xmlns:android="http://schemas.android.com/apk/res/android">
+	<shortcut
+		android:shortcutId="import"
+		android:enabled="true"
+		android:icon="@mipmap/ic_launcher_import_data"
+		android:shortcutShortLabel="@string/import_short_label">
+		<intent
+			android:action="android.intent.action.VIEW"
+			android:targetPackage="org.diasurgical.devilutionx"
+			android:targetClass="org.diasurgical.devilutionx.ImportActivity" />
+	</shortcut>
+</shortcuts>