Example usage for android.view Window getCallback

Introduction

In this page you can find the example usage for android.view Window getCallback.

Prototype

public final Callback getCallback() 

Source Link

Document

Return the current Callback interface for this window.

Usage

From source file:android.support.v7.app.ActionBarActivityDelegateICS.java

@Override
public void onCreate(Bundle savedInstanceState) {
    // Set framework uiOptions from the support metadata value
    if (UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW.equals(getUiOptionsFromMetadata())) {
        mActivity.getWindow().setUiOptions(ActivityInfo.UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW,
                ActivityInfo.UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW);
    }// ww w .ja v a2 s  . co  m

    super.onCreate(savedInstanceState);

    if (mHasActionBar) {
        // If action bar is requested by inheriting from the appcompat theme,
        // the system will not know about that. So explicitly request for an action bar.
        mActivity.requestWindowFeature(WindowCompat.FEATURE_ACTION_BAR);
    }
    if (mOverlayActionBar) {
        mActivity.requestWindowFeature(WindowCompat.FEATURE_ACTION_BAR_OVERLAY);
    }

    /*
     * This goofy move needs some explanation.
     *
     * The verifier on older platform versions has some interesting side effects if
     * a class defines a method that takes a parameter of a type that doesn't exist.
     * In this case, that type is android.view.ActionMode. Therefore, ActionBarActivity
     * cannot override the onActionModeStarted/Finished methods without causing nastiness
     * when it is loaded on older platform versions.
     *
     * Since these methods are actually part of the window callback and not intrinsic to
     * Activity itself, we can install a little shim with the window instead that knows
     * about the ActionMode class. Note that this means that any new methods added to
     * Window.Callback in the future won't get proxied without updating the support lib,
     * but we shouldn't be adding new methods to public interfaces that way anyway...right? ;)
     */
    final Window w = mActivity.getWindow();
    w.setCallback(createWindowCallbackWrapper(w.getCallback()));
}

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From source file:android.support.v7.internal.app.ToolbarActionBar.java

public ToolbarActionBar(Toolbar toolbar, CharSequence title, Window window) {
    mDecorToolbar = new ToolbarWidgetWrapper(toolbar, false);
    mWindowCallback = new ToolbarCallbackWrapper(window.getCallback());
    mDecorToolbar.setWindowCallback(mWindowCallback);
    toolbar.setOnMenuItemClickListener(mMenuClicker);
    mDecorToolbar.setWindowTitle(title);

    mWindow = window;/*w w w . ja v  a2s . c  o  m*/
}

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