apache#110 (Android) Fixed keyboard from overlapping content

Author: kfeng0806

plugin.xml

@@ -38,6 +38,7 @@
 
     <platform name="android">
         <source-file src="src/android/StatusBar.java" target-dir="src/org/apache/cordova/statusbar" />
+        <source-file src="src/android/StatusBarViewHelper.java" target-dir="src/org/apache/cordova/statusbar" />
 
         <config-file target="res/xml/config.xml" parent="/*">
             <feature name="StatusBar">

src/android/StatusBar.java

@@ -40,6 +40,7 @@
 
 public class StatusBar extends CordovaPlugin {
     private static final String TAG = "StatusBar";
+    private boolean _isVisible = true;
 
     private static final String ACTION_HIDE = "hide";
     private static final String ACTION_SHOW = "show";
@@ -66,11 +67,16 @@ public class StatusBar extends CordovaPlugin {
     public void initialize(final CordovaInterface cordova, CordovaWebView webView) {
         LOG.v(TAG, "StatusBar: initialization");
         super.initialize(cordova, webView);
+        StatusBar statusbar = this;
 
         activity = this.cordova.getActivity();
         window = activity.getWindow();
 
         activity.runOnUiThread(() -> {
+            //https://github.com/apache/cordova-plugin-statusbar/issues/110
+            //This corrects keyboard behaviour when overlaysWebView is true
+            StatusBarViewHelper.assist(cordova.getActivity(), statusbar);
+
             // Clear flag FLAG_FORCE_NOT_FULLSCREEN which is set initially
             // by the Cordova.
             window.clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
@@ -88,6 +94,10 @@ public void initialize(final CordovaInterface cordova, CordovaWebView webView) {
         });
     }
 
+    public boolean isVisible() {
+        return _isVisible;
+    }
+
     /**
      * Executes the request and returns PluginResult.
      *
@@ -117,6 +127,7 @@ public boolean execute(final String action, final CordovaArgs args, final Callba
                     // CB-11197 We still need to update LayoutParams to force status bar
                     // to be hidden when entering e.g. text fields
                     window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+                    _isVisible = true;
                 });
                 return true;
 
@@ -131,6 +142,7 @@ public boolean execute(final String action, final CordovaArgs args, final Callba
                     // CB-11197 We still need to update LayoutParams to force status bar
                     // to be hidden when entering e.g. text fields
                     window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+                    _isVisible = false;
                 });
                 return true;
 

src/android/StatusBarViewHelper.java

@@ -0,0 +1,74 @@
+package org.apache.cordova.statusbar;
+
+import android.app.Activity;
+import android.graphics.Rect;
+import android.view.View;
+import android.view.ViewTreeObserver;
+import android.widget.FrameLayout;
+
+public class StatusBarViewHelper {
+
+    // For more information, see https://issuetracker.google.com/issues/36911528
+    // To use this class, simply invoke assistActivity() on an Activity that already has its content view set.
+
+    //This solution was based off of
+    //https://stackoverflow.com/questions/7417123/android-how-to-adjust-layout-in-full-screen-mode-when-softkeyboard-is-visible/19494006#answer-42261118
+
+    private View mChildOfContent;
+    private int usableHeightPrevious;
+    private FrameLayout.LayoutParams frameLayoutParams;
+    private Activity activity;
+    private StatusBar statusbar;
+    private static final String TAG = "StatusBarViewHelper";
+
+    static void assist(Activity activity, StatusBar statusbar) {
+        new StatusBarViewHelper(activity, statusbar);
+    }
+
+    private StatusBarViewHelper(Activity a, StatusBar b) {
+        activity = a;
+        statusbar = b;
+
+        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
+        mChildOfContent = content.getChildAt(0);
+
+        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+            public void onGlobalLayout() {
+                possiblyResizeChildOfContent();
+            }
+        });
+
+        frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
+    }
+
+    private void possiblyResizeChildOfContent() {
+        int usableHeightNow = computeUsableHeight();
+        if (usableHeightNow != usableHeightPrevious) {
+            frameLayoutParams.height = usableHeightNow;
+            mChildOfContent.requestLayout();
+            usableHeightPrevious = usableHeightNow;
+        }
+    }
+
+    private boolean _isStatusBarVisible() {
+        return statusbar.isVisible();
+    }
+
+    private int computeUsableHeight() {
+        Rect r = new Rect();
+        mChildOfContent.getWindowVisibleDisplayFrame(r);
+        int uiOptions = activity.getWindow().getDecorView().getSystemUiVisibility();
+        boolean isFullscreen = ((uiOptions | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN) == uiOptions);
+        boolean isStatusBarVisible = this._isStatusBarVisible();
+
+        int usableHeight = r.bottom;
+
+        // This handles both overlayed status bars and reserved spaces for cutouts when the
+        // status bar is hidden
+        if (!isFullscreen || (isFullscreen && !isStatusBarVisible)) {
+            usableHeight = usableHeight - r.top;
+        }
+
+        return usableHeight;
+    }
+}