samples/ApiDemos/src/com/example/android/apis/graphics/SurfaceViewOverlay.java

/*
 * Copyright (C) 2007 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.example.android.apis.graphics;

import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

//Need the following import to get access to the app resources, since this
//class is in a sub-package.
import com.example.android.apis.R;

/**
 * Demonstration of overlays placed on top of a SurfaceView.
 */
public class SurfaceViewOverlay extends Activity {
    View mVictimContainer;
    View mVictim1;
    View mVictim2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.surface_view_overlay);

        GLSurfaceView glSurfaceView =
            (GLSurfaceView) findViewById(R.id.glsurfaceview);
        glSurfaceView.setRenderer(new CubeRenderer(false));

        // Find the views whose visibility will change
        mVictimContainer = findViewById(R.id.hidecontainer);
        mVictim1 = findViewById(R.id.hideme1);
        mVictim1.setOnClickListener(new HideMeListener(mVictim1));
        mVictim2 = findViewById(R.id.hideme2);
        mVictim2.setOnClickListener(new HideMeListener(mVictim2));

        // Find our buttons
        Button visibleButton = (Button) findViewById(R.id.vis);
        Button invisibleButton = (Button) findViewById(R.id.invis);
        Button goneButton = (Button) findViewById(R.id.gone);

        // Wire each button to a click listener
        visibleButton.setOnClickListener(mVisibleListener);
        invisibleButton.setOnClickListener(mInvisibleListener);
        goneButton.setOnClickListener(mGoneListener);
    }

    @Override
    protected void onResume() {
        // Ideally a game should implement onResume() and onPause()
        // to take appropriate action when the activity looses focus
        super.onResume();
    }

    @Override
    protected void onPause() {
        // Ideally a game should implement onResume() and onPause()
        // to take appropriate action when the activity looses focus
        super.onPause();
    }

    class HideMeListener implements OnClickListener {
        final View mTarget;

        HideMeListener(View target) {
            mTarget = target;
        }

        public void onClick(View v) {
            mTarget.setVisibility(View.INVISIBLE);
        }

    }

    OnClickListener mVisibleListener = new OnClickListener() {
        public void onClick(View v) {
            mVictim1.setVisibility(View.VISIBLE);
            mVictim2.setVisibility(View.VISIBLE);
            mVictimContainer.setVisibility(View.VISIBLE);
        }
    };

    OnClickListener mInvisibleListener = new OnClickListener() {
        public void onClick(View v) {
            mVictim1.setVisibility(View.INVISIBLE);
            mVictim2.setVisibility(View.INVISIBLE);
            mVictimContainer.setVisibility(View.INVISIBLE);
        }
    };

    OnClickListener mGoneListener = new OnClickListener() {
        public void onClick(View v) {
            mVictim1.setVisibility(View.GONE);
            mVictim2.setVisibility(View.GONE);
            mVictimContainer.setVisibility(View.GONE);
        }
    };
}