Allow to install APK files from filebrowser on click, by @gsantner (PR #1417)

Author: gsantner

app/src/main/AndroidManifest.xml

@@ -22,6 +22,8 @@
     <uses-permission android:name="android.permission.INSTALL_SHORTCUT" />
     <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
+
 
     <uses-feature
         android:name="android.hardware.touchscreen"

app/src/main/java/net/gsantner/markor/activity/MainActivity.java

@@ -412,6 +412,8 @@ public void onFsViewerDoUiUpdate(FilesystemViewerAdapter adapter) {
                 public void onFsViewerSelected(String request, File file, final Integer lineNumber) {
                     if (TextFormat.isTextFile(file)) {
                         DocumentActivity.launch(MainActivity.this, file, false, null, null, lineNumber);
+                    } else if (file.getName().toLowerCase().endsWith(".apk")) {
+                        _shareUtil.requestApkInstallation(file);
                     } else {
                         DocumentActivity.askUserIfWantsToOpenFileInThisApp(MainActivity.this, file);
                     }

app/src/main/java/net/gsantner/markor/util/MarkorWebViewClient.java

@@ -59,6 +59,8 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
                     newPreview.putExtra(DocumentIO.EXTRA_PATH, file);
                     newPreview.putExtra(DocumentActivity.EXTRA_DO_PREVIEW, true);
                     _activity.startActivity(newPreview);
+                } else if (file.getName().toLowerCase().endsWith(".apk")) {
+                    su.requestApkInstallation(file);
                 } else if ((mimetype = ContextUtils.getMimeType(url)) != null) {
                     su.viewFileInOtherApp(file, mimetype);
                 } else {

app/src/main/java/net/gsantner/markor/util/ShareUtil.java

@@ -20,14 +20,11 @@
 import android.webkit.WebView;
 import android.widget.Toast;
 
-import net.gsantner.markor.BuildConfig;
 import net.gsantner.markor.R;
 import net.gsantner.markor.activity.DocumentRelayActivity;
 import net.gsantner.markor.model.Document;
 
 public class ShareUtil extends net.gsantner.opoc.util.ShareUtil {
-    public static final String FILE_PROVIDER_AUTHORITY = BuildConfig.APPLICATION_ID + ".provider";
-
     public ShareUtil(Context context) {
         super(context);
         setChooserTitle(_context.getString(R.string.share_to_arrow));

app/src/main/java/net/gsantner/opoc/util/ShareUtil.java

@@ -317,6 +317,39 @@ public boolean viewFileInOtherApp(final File file, @Nullable final String type)
         return false;
     }
 
+
+    /**
+     * Request installation of APK specified by file
+     * Permission required:
+     * <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
+     *
+     * @param file The apk file to install
+     */
+    public boolean requestApkInstallation(final File file) {
+        if (file == null || !file.getName().toLowerCase().endsWith(".apk")) {
+            return false;
+        }
+
+        Uri fileUri = null;
+        try {
+            fileUri = FileProvider.getUriForFile(_context, getFileProviderAuthority(), file);
+        } catch (Exception ignored) {
+            try {
+                fileUri = Uri.fromFile(file);
+            } catch (Exception ignored2) {
+            }
+        }
+
+        if (fileUri != null) {
+            final Intent intent = new Intent(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? Intent.ACTION_INSTALL_PACKAGE : Intent.ACTION_VIEW)
+                    .setFlags(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? Intent.FLAG_GRANT_READ_URI_PERMISSION : Intent.FLAG_ACTIVITY_NEW_TASK)
+                    .setDataAndType(fileUri, "application/vnd.android.package-archive");
+            _context.startActivity(intent);
+            return true;
+        }
+        return false;
+    }
+
     /**
      * Share the given bitmap with given format
      *