RotatingButton.java

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The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...

/*
 * Copyright (C) 2010 The Android开源工程
 *
 * 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.view;

// 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;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.SeekBar;

/**
 * This application demonstrates the ability to transform views in 2D and 3D, scaling them,
 * translating them, and rotating them (in 2D and 3D). Use the seek bars to set the various
 * transform properties of the button.
 */
public class RotatingButton extends Activity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.rotating_view);
        final Button rotatingButton = (Button) findViewById(R.id.rotatingButton);
        SeekBar seekBar;
        seekBar = (SeekBar) findViewById(R.id.translationX);
        seekBar.setMax(400);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                rotatingButton.setTranslationX((float)progress);
            }
        });
        seekBar = (SeekBar) findViewById(R.id.translationY);
        seekBar.setMax(800);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                rotatingButton.setTranslationY((float)progress);
            }
        });
        seekBar = (SeekBar) findViewById(R.id.scaleX);
        seekBar.setMax(50);
        seekBar.setProgress(10);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                rotatingButton.setScaleX((float)progress/10f);
            }
        });
        seekBar = (SeekBar) findViewById(R.id.scaleY);
        seekBar.setMax(50);
        seekBar.setProgress(10);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                rotatingButton.setScaleY((float)progress/10f);
            }
        });
        seekBar = (SeekBar) findViewById(R.id.rotationX);
        seekBar.setMax(360);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // prevent seeking on app creation
                rotatingButton.setRotationX((float)progress);
            }
        });
        seekBar = (SeekBar) findViewById(R.id.rotationY);
        seekBar.setMax(360);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // prevent seeking on app creation
                rotatingButton.setRotationY((float)progress);
            }
        });
        seekBar = (SeekBar) findViewById(R.id.rotationZ);
        seekBar.setMax(360);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            public void onStopTrackingTouch(SeekBar seekBar) {
            }

            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // prevent seeking on app creation
                rotatingButton.setRotation((float)progress);
            }
        });
    }
}