[android-developers] Android set soft input mode with javascript/java bridge outside onCreate()

[Bazley]

I want most of my pages to remain still and the android keyboard to go on 
top of them, so in *AndroidManifest.xml* I have

    android:windowSoftInputMode="adjustPan"

On one particular page I want the keyboard to push up the content, 
triggered by a javascript/java bridge in a webview, hence the 
JavaScriptFunctions class. The toast is purely there to text the interface 
is working (the toast does appear). pushKeyboard() is called from the 
javascript inside the webview.

*MainActivity.java*

    public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {
        .
        .
        public static Context cont;

        protected void onCreate(Bundle savedInstanceState) {
            .
            .
            webView.addJavascriptInterface(new JavaScriptFunctions(), 
"AndroidNative");
            cont = MainActivity.this;

            // this "works", but is useless because it changes the soft 
input for the whole application:
            
//getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        }

        public class JavaScriptFunctions {
            @JavascriptInterface
            public void pushKeyboard() {
                Toast.makeText(MainActivity.this, "Balls.", Toast.
LENGTH_LONG).show();
                // 
MainActivity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
 
// This gives error "can't reference non-static method from static context"
                ((Activity)getApplicationContext()).getWindow()
                                    .setSoftInputMode(WindowManager.
LayoutParams.SOFT_INPUT_ADJUST_RESIZE); // fails
                // 
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
 
// fails
                //((Activity)cont).getWindow()
                //           
 .setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); // 
extreme failure
            }
        }
    }


Inside onCreate(), the code does indeed set the soft input mode, but I 
can't get it working from inside JavaScriptFunctions. I've tried many 
variations, including creating a Context in MainActivity.
How do I get this working?

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