Trapping backspace at EditText level to prevent popping Docs.
When the EditText is empty, pressing backspace on soft/hardware keyboard
will call on the EditText's OnKeyListener. Since we don't handle
backspace, it will then bubble up to Activity-level, which will then pop
the document stack due to the feature of using backspace as navigation.
This will trap the call correctly if the EditText is empty.
Bug: 30066261
Change-Id: I231507b9469bfa52478872491f1d2713a1ac58ba
diff --git a/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java b/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java
index d830c61..a37590d 100644
--- a/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java
+++ b/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java
@@ -22,6 +22,7 @@
import android.content.Context;
import android.os.Bundle;
import android.text.Editable;
+import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.LayoutInflater;
@@ -91,6 +92,14 @@
return false;
}
+ // Returning false in this method will bubble the event up to
+ // {@link BaseActivity#onKeyDown}. In order to prevent backspace popping
+ // documents once the textView is empty, we are going to trap it here.
+ if (keyCode == KeyEvent.KEYCODE_DEL
+ && TextUtils.isEmpty(mDisplayName.getText())) {
+ return true;
+ }
+
if (keyCode == KeyEvent.KEYCODE_ENTER && mSave.isEnabled()) {
performSave();
return true;