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ElevationBasic / src / com.example.android.elevationbasic /

ElevationBasicFragment.java

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/*
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 * Copyright (C) 2014 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.elevationbasic;
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import android.support.v4.app.Fragment;
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import android.os.Bundle;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewGroup;
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import com.example.android.common.logger.Log;
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public class ElevationBasicFragment extends Fragment {
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    private final static String TAG = "ElevationBasicFragment";
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    @Override
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    public void onCreate(Bundle savedInstanceState) {
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        super.onCreate(savedInstanceState);
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        setHasOptionsMenu(true);
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    }
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    @Override
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    public View onCreateView(
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            LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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        /**
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         * Inflates an XML containing two shapes: the first has a fixed elevation
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         * and the second ones raises when tapped.
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         */
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        View rootView = inflater.inflate(R.layout.elevation_basic, container, false);
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        View shape2 = rootView.findViewById(R.id.floating_shape_2);
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        /**
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         * Sets a {@Link View.OnTouchListener} that responds to a touch event on shape2.
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         */
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        shape2.setOnTouchListener(new View.OnTouchListener() {
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            @Override
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            public boolean onTouch(View view, MotionEvent motionEvent) {
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                int action = motionEvent.getActionMasked();
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                /* Raise view on ACTION_DOWN and lower it on ACTION_UP. */
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                switch (action) {
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                    case MotionEvent.ACTION_DOWN:
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                        Log.d(TAG, "ACTION_DOWN on view.");
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                        view.setTranslationZ(120);
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                        break;
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                    case MotionEvent.ACTION_UP:
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                        Log.d(TAG, "ACTION_UP on view.");
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                        view.setTranslationZ(0);
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                        break;
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                    default:
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                        return false;
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                }
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                return true;
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            }
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        });
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        return rootView;
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    }
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}
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