tdf#124480 android: Use an actual button for "Select file to open"

Instead of using a TextView and setting `?attr/colorButtonNormal`
for the background color, just use a button right away, which also
makes sure that the proper button color is used and avoids
using `colorButtonNormal` only available from API level 21 on. [1]

Also drop the extra `LinearLayout` parent that was only containing
this one TextView.

While at it, drop an unused import.

[1] https://developer.android.com/reference/android/R.attr#colorButtonNormal

Change-Id: Ie2f7e2646d20f4051fb2513fb8fd72572ce19217
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160076
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

1 files changed, 2 insertions, 3 deletions

diff --git a/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java b/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java
index eba618095045..6f583377d592 100644
--- a/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java
+++ b/android/source/src/java/org/libreoffice/ui/LibreOfficeUIActivity.java
@@ -43,7 +43,6 @@ import android.view.animation.AnimationUtils;
 import android.view.animation.OvershootInterpolator;
 import android.widget.LinearLayout;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import org.libreoffice.AboutDialogFragment;
 import org.libreoffice.BuildConfig;
@@ -199,7 +198,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
         impressLayout = findViewById(R.id.impressLayout);
         calcLayout = findViewById(R.id.calcLayout);
         drawLayout = findViewById(R.id.drawLayout);
-        TextView openFileView = findViewById(R.id.open_file_view);
+        TextView openFileView = findViewById(R.id.open_file_button);
         openFileView.setOnClickListener(this);
 
 
@@ -458,7 +457,7 @@ public class LibreOfficeUIActivity extends AppCompatActivity implements Settings
             } else {
                 expandFabMenu();
             }
-        } else if (id == R.id.open_file_view) {
+        } else if (id == R.id.open_file_button) {
             showSystemFilePickerAndOpenFile();
         } else if (id == R.id.newWriterFAB) {
             loadNewDocument(DocumentType.WRITER);