Java tutorial
/* * Copyright (C) 2016 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.android.talkbacktests.testsession; import android.content.Context; import android.os.Bundle; import android.support.v4.view.AccessibilityDelegateCompat; import android.support.v4.view.ViewCompat; import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.accessibility.AccessibilityNodeInfo; import android.widget.LinearLayout; import com.android.talkbacktests.R; public class DismissibleViewTest extends BaseTestContent implements View.OnClickListener { private View mDismissibleView; private LinearLayout mContainer; public DismissibleViewTest(Context context, String subtitle, String description) { super(context, subtitle, description); } @Override public View getView(final LayoutInflater inflater, ViewGroup container, Context context) { View view = inflater.inflate(R.layout.test_dismissible_view, container, false); view.findViewById(R.id.test_dismissible_view_dismiss_button).setOnClickListener(this); view.findViewById(R.id.test_dismissible_view_reset_button).setOnClickListener(this); mContainer = (LinearLayout) view.findViewById(R.id.test_dismissible_view_container); mDismissibleView = view.findViewById(R.id.dismissible_view); ViewCompat.setAccessibilityDelegate(mDismissibleView, new MyDelegate()); return view; } @Override public void onClick(View view) { switch (view.getId()) { case R.id.test_dismissible_view_dismiss_button: if (mContainer.getChildCount() > 1) { mDismissibleView.performAccessibilityAction(AccessibilityNodeInfo.ACTION_DISMISS, null); } break; case R.id.test_dismissible_view_reset_button: if (mContainer.getChildCount() < 2) { mContainer.addView(mDismissibleView); } break; } } private final class MyDelegate extends AccessibilityDelegateCompat { @Override public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) { super.onInitializeAccessibilityNodeInfo(host, info); info.addAction(AccessibilityNodeInfoCompat.ACTION_DISMISS); } @Override public boolean performAccessibilityAction(View host, int action, Bundle args) { switch (action) { case AccessibilityNodeInfoCompat.ACTION_DISMISS: mContainer.removeView(mDismissibleView); return true; default: return super.performAccessibilityAction(host, action, args); } } } }