android onUserInteraction在对话框首选项中不起作用

gojuced7  于 2022-12-02  发布在  Android
关注(0)|答案(4)|浏览(243)

预期任何用户交互都将调用onUserInteraction。它在PreferenceActivity中工作正常。但是,当DialogPreference是弹出窗口时,即使存在用户交互(如触摸事件),也不再调用onUserInteraction
看起来DialogPreference并不是唯一的情况,无论何时显示Dialog,它都不会将用户交互报告给Activity。
但是如果我真的需要它,我能做什么呢?谢谢。

dgtucam1

dgtucam11#

据我所知,当用户与对话框交互时(甚至从监视交互的Activity开始),onUserInteraction()不会被调用。
我知道的两个解决方案是:

  • 子类Dialog/DialogPreference类并覆盖dispatchTouchEvent()
  • 通过发出以下命令实现Window.Callback接口并将其设置为Dialog的窗口回调:
dialog.getWindow().setCallback(callbackImplementation);

**注意:**此实现应通过调用适当的对话框方法来处理所有接收到的事件,或以您自己的方式处理事件(例如,通过手动调用onUserInteraction())。
编辑

您有几种方法可以从自定义PreferenceDialog示例中获取Activity
1.调用返回PreferenceManagerDialogPreference.getPreferenceManager()方法。它有一个getActivity()方法**,但它是包私有的**,因此您必须将自定义的DialogPreference放在android.preference包中才能访问它。
1.在PreferenceActivity.onCreate()中,膨胀首选项后,使用findPreference()通过键找到自定义的DialogPreference,然后将其强制转换为自定义类,并通过访问器将activity设置为this
我会选择第二个选项。

lsmepo6l

lsmepo6l2#

下面是DialogFragment的完整解决方案,它在触摸时触发Activity的onUserInteraction(),并保留默认回调的行为:

public abstract class BaseDialogFragment extends DialogFragment {

    @Override
    public void onActivityCreated(final Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        final Window window = getDialog().getWindow();
        if (window != null) {
            window.setCallback(new UserInteractionAwareCallback(window.getCallback(), getActivity()));
        }
    }
}

下面是回调本身:

public class UserInteractionAwareCallback implements Window.Callback {

    private final Window.Callback originalCallback;
    private final Activity activity;

    public UserInteractionAwareCallback(final Window.Callback originalCallback, final Activity activity) {
        this.originalCallback = originalCallback;
        this.activity = activity;
    }

    @Override
    public boolean dispatchKeyEvent(final KeyEvent event) {
        return originalCallback.dispatchKeyEvent(event);
    }

    @Override
    public boolean dispatchKeyShortcutEvent(final KeyEvent event) {
        return originalCallback.dispatchKeyShortcutEvent(event);
    }

    @Override
    public boolean dispatchTouchEvent(final MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
            case MotionEvent.ACTION_MOVE:
            case MotionEvent.ACTION_UP:
                if (activity != null) {
                    activity.onUserInteraction();
                }
                break;
            default:
        }
        return originalCallback.dispatchTouchEvent(event);
    }

    @Override
    public boolean dispatchTrackballEvent(final MotionEvent event) {
        return originalCallback.dispatchTrackballEvent(event);
    }

    @Override
    public boolean dispatchGenericMotionEvent(final MotionEvent event) {
        return originalCallback.dispatchGenericMotionEvent(event);
    }

    @Override
    public boolean dispatchPopulateAccessibilityEvent(final AccessibilityEvent event) {
        return originalCallback.dispatchPopulateAccessibilityEvent(event);
    }

    @Nullable
    @Override
    public View onCreatePanelView(final int featureId) {
        return originalCallback.onCreatePanelView(featureId);
    }

    @Override
    public boolean onCreatePanelMenu(final int featureId, final Menu menu) {
        return originalCallback.onCreatePanelMenu(featureId, menu);
    }

    @Override
    public boolean onPreparePanel(final int featureId, final View view, final Menu menu) {
        return originalCallback.onPreparePanel(featureId, view, menu);
    }

    @Override
    public boolean onMenuOpened(final int featureId, final Menu menu) {
        return originalCallback.onMenuOpened(featureId, menu);
    }

    @Override
    public boolean onMenuItemSelected(final int featureId, final MenuItem item) {
        return originalCallback.onMenuItemSelected(featureId, item);
    }

    @Override
    public void onWindowAttributesChanged(final WindowManager.LayoutParams attrs) {
        originalCallback.onWindowAttributesChanged(attrs);
    }

    @Override
    public void onContentChanged() {
        originalCallback.onContentChanged();
    }

    @Override
    public void onWindowFocusChanged(final boolean hasFocus) {
        originalCallback.onWindowFocusChanged(hasFocus);
    }

    @Override
    public void onAttachedToWindow() {
        originalCallback.onAttachedToWindow();
    }

    @Override
    public void onDetachedFromWindow() {
        originalCallback.onDetachedFromWindow();
    }

    @Override
    public void onPanelClosed(final int featureId, final Menu menu) {
        originalCallback.onPanelClosed(featureId, menu);
    }

    @Override
    public boolean onSearchRequested() {
        return originalCallback.onSearchRequested();
    }

    @TargetApi(Build.VERSION_CODES.M)
    @Override
    public boolean onSearchRequested(final SearchEvent searchEvent) {
        return originalCallback.onSearchRequested(searchEvent);
    }

    @Nullable
    @Override
    public ActionMode onWindowStartingActionMode(final ActionMode.Callback callback) {
        return originalCallback.onWindowStartingActionMode(callback);
    }

    @TargetApi(Build.VERSION_CODES.M)
    @Nullable
    @Override
    public ActionMode onWindowStartingActionMode(final ActionMode.Callback callback, final int type) {
        return originalCallback.onWindowStartingActionMode(callback, type);
    }

    @Override
    public void onActionModeStarted(final ActionMode mode) {
        originalCallback.onActionModeStarted(mode);
    }

    @Override
    public void onActionModeFinished(final ActionMode mode) {
        originalCallback.onActionModeFinished(mode);
    }
}
0md85ypi

0md85ypi3#

下面是一个更加独立和完整的Kotlin实现:

/**
 * Sets up the receiver's [window][Dialog.getWindow] to call [Activity.onUserInteraction]
 * at appropriate times, mirroring the calls made in [Activity] itself.
 * This method should be called immediately after [Dialog.show].
 */
fun Dialog.reportUserInteraction() {
  window?.let { window ->
    val activity = window.decorView.activity

    val wrappedCallback = window.callback
    window.callback = object : Window.Callback by wrappedCallback {
      override fun dispatchGenericMotionEvent(event: MotionEvent): Boolean {
        activity.onUserInteraction()
        return wrappedCallback.dispatchGenericMotionEvent(event)
      }

      override fun dispatchKeyEvent(event: KeyEvent): Boolean {
        activity.onUserInteraction()
        return wrappedCallback.dispatchKeyEvent(event)
      }

      override fun dispatchKeyShortcutEvent(event: KeyEvent): Boolean {
        activity.onUserInteraction()
        return wrappedCallback.dispatchKeyShortcutEvent(event)
      }

      override fun dispatchTouchEvent(event: MotionEvent): Boolean {
        if (event.action == ACTION_DOWN) activity.onUserInteraction()
        return wrappedCallback.dispatchTouchEvent(event)
      }

      override fun dispatchTrackballEvent(event: MotionEvent): Boolean {
        activity.onUserInteraction()
        return wrappedCallback.dispatchTrackballEvent(event)
      }
    }
  }
}

依赖于:

val View.activity: Activity
  get() = context.activityOrNull!!

val Context.activityOrNull: Activity?
  get() {
    var context = this
    while (true) {
      if (context is Application) {
        return null
      }
      if (context is Activity) {
        return context
      }
      if (context is ContextWrapper) {
        val baseContext = context.baseContext
        // Prevent Stack Overflow.
        if (baseContext === this) {
          return null
        }
        context = baseContext
      } else {
        return null
      }
    }
  }
brccelvz

brccelvz4#

这对我很有效,Kotlin版本:
在对话框中:

override fun onStart() {
    super.onStart()
    UserInteractionInterceptor.wrapWindowCallback(dialog.window, activity)
}

和UserInteractionInterceptor类别:

object UserInteractionInterceptor {
fun wrapWindowCallback(window: Window, activity: FragmentActivity?) {
    val originalCallback: Window.Callback = window.callback

    window.callback = object : Window.Callback {
        override fun dispatchKeyEvent(event: KeyEvent?): Boolean {
            return originalCallback.dispatchKeyEvent(event)
        }

        override fun dispatchKeyShortcutEvent(event: KeyEvent?): Boolean {
            return originalCallback.dispatchKeyShortcutEvent(event)
        }

        override fun dispatchTouchEvent(event: MotionEvent): Boolean {
            if (event.action == MotionEvent.ACTION_DOWN) {
                activity?.onUserInteraction()
            }
            return originalCallback.dispatchTouchEvent(event)
        }

        override fun dispatchTrackballEvent(event: MotionEvent?): Boolean {
            return originalCallback.dispatchTrackballEvent(event)
        }

        override fun dispatchGenericMotionEvent(event: MotionEvent?): Boolean {
            return originalCallback.dispatchGenericMotionEvent(event)
        }

        override fun dispatchPopulateAccessibilityEvent(event: AccessibilityEvent?): Boolean {
            return originalCallback.dispatchPopulateAccessibilityEvent(event)
        }

        @Nullable
        override fun onCreatePanelView(featureId: Int): View? {
            return originalCallback.onCreatePanelView(featureId)
        }

        override fun onCreatePanelMenu(featureId: Int, p1: Menu): Boolean {
            return originalCallback.onCreatePanelMenu(featureId, p1)
        }

        override fun onPreparePanel(featureId: Int, view: View?, p2: Menu): Boolean {
            return originalCallback.onPreparePanel(featureId, view, p2)
        }

        override fun onMenuOpened(featureId: Int, p1: Menu): Boolean {
            return originalCallback.onMenuOpened(featureId, p1)
        }

        override fun onMenuItemSelected(featureId: Int, p1: MenuItem): Boolean {
            return originalCallback.onMenuItemSelected(featureId, p1)
        }

        override fun onWindowAttributesChanged(attrs: WindowManager.LayoutParams?) {
            originalCallback.onWindowAttributesChanged(attrs)
        }

        override fun onContentChanged() {
            originalCallback.onContentChanged()
        }

        override fun onWindowFocusChanged(hasFocus: Boolean) {
            originalCallback.onWindowFocusChanged(hasFocus)
        }

        override fun onAttachedToWindow() {
            originalCallback.onAttachedToWindow()
        }

        override fun onDetachedFromWindow() {
            originalCallback.onDetachedFromWindow()
        }

        override fun onPanelClosed(featureId: Int, p1: Menu) {
            originalCallback.onPanelClosed(featureId, p1)
        }

        override fun onSearchRequested(): Boolean {
            return originalCallback.onSearchRequested()
        }

        @TargetApi(Build.VERSION_CODES.M)
        override fun onSearchRequested(searchEvent: SearchEvent?): Boolean {
            return originalCallback.onSearchRequested(searchEvent)
        }

        @Nullable
        override fun onWindowStartingActionMode(callback: ActionMode.Callback?): ActionMode? {
            return originalCallback.onWindowStartingActionMode(callback)
        }

        @TargetApi(Build.VERSION_CODES.M)
        @Nullable
        override fun onWindowStartingActionMode(callback: ActionMode.Callback?, type: Int): ActionMode? {
            return originalCallback.onWindowStartingActionMode(callback, type)
        }

        override fun onActionModeStarted(mode: ActionMode?) {
            originalCallback.onActionModeStarted(mode)
        }

        override fun onActionModeFinished(mode: ActionMode?) {
            originalCallback.onActionModeFinished(mode)
        }
    }
}

}

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