仿淘宝"摇一摇"
前几天看到淘宝最新的客户端有一个弱网络情况数据加载超时，手持摇一摇即可手动刷新功能，觉得蛮有趣，便自己抽空实现了下，并增加了摇动时对话框抖动和声音的效果。
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效果图如下：
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? 主要代码如下，具体代码可以参见附件：
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/** * 摇一摇,尝试重新连接网络 * @ClassName: ShakeDialog * @author 姜涛 * @version 1.0 2012-2-2 上午10:26:09 */public class ShakeDialog extends AlertDialog implements OnClickListener,SensorEventListener {private View view;private Context mContext;private Button settingBtn, retryBtn, backBtn;private SensorManager mSensorManager;private long firstTime = 0, endTime = 0;private float x, last_x;private float y, last_y;private float z, last_z;private MediaPlayer mediaPlayer;private static final int CHECK_NET = 1;private static final long TIME = 1000;private final Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case CHECK_NET:if (NetUtils.checkNetwork(mContext)) {dismiss();} else {view.setVisibility(View.VISIBLE);}break;}}};public ShakeDialog(Context context) {super(context);this.mContext = context;}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);view = getLayoutInflater().inflate(R.layout.connecterror_layout, null);setContentView(view);initUi();initView();addListener();}@Overrideprotected void onStop() {if (mSensorManager != null)mSensorManager.unregisterListener(this);if (mediaPlayer != null)mediaPlayer.release();super.onStop();}private void initUi() {settingBtn = (Button) findViewById(R.id.setting);retryBtn = (Button) findViewById(R.id.retry);backBtn = (Button) findViewById(R.id.back);mSensorManager = (SensorManager) mContext.getSystemService(Context.SENSOR_SERVICE);mSensorManager.registerListener(this,mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),SensorManager.SENSOR_DELAY_UI); // 注册加速度感应器mediaPlayer = new MediaPlayer();}private void initView() {try {AssetFileDescriptor fd = mContext.getResources().getAssets().openFd("sound/shake_sound_male.mp3");mediaPlayer.setDataSource(fd.getFileDescriptor(),fd.getStartOffset(), fd.getLength());mediaPlayer.prepare();} catch (IOException e) {e.printStackTrace();}}private void addListener() {settingBtn.setOnClickListener(this);retryBtn.setOnClickListener(this);backBtn.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.setting: // 设置网络Intent intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);mContext.startActivity(intent);break;case R.id.retry: // 重试view.setVisibility(View.INVISIBLE);handler.sendEmptyMessageDelayed(CHECK_NET, TIME);break;case R.id.back: // 返回cancel();break;}}/** * 传感器精确度变化时调用 */@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {// TODO Auto-generated method stub}/** * 传感器数据变化时调用 */@Overridepublic void onSensorChanged(SensorEvent event) {int sensorType = event.sensor.getType();float[] values = event.values;if (sensorType == Sensor.TYPE_ACCELEROMETER) {firstTime = System.currentTimeMillis();if ((firstTime - endTime) > 100) {long betweenTime = firstTime - endTime;/** * x方向就是手机的水平方向，右为正 * y方向就是手机的水平垂直方向，前为正 * y方向就是手机的空间垂直方向，天空的方向为正，地球的方向为负 */x = values[SensorManager.DATA_X];y = values[SensorManager.DATA_Y];z = values[SensorManager.DATA_Z];float speed = Math.abs(x + y + z - last_x - last_y - last_z)/ betweenTime * 10000;if (speed > 1000) {view.startAnimation(AnimationUtils.loadAnimation(mContext,R.anim.shake));mediaPlayer.start();handler.sendEmptyMessageDelayed(CHECK_NET, TIME);}last_x = x;last_y = y;last_z = z;endTime = System.currentTimeMillis();}}}static class NetUtils {/** * 判断网络的连接情况 * * @param context * @return */public static boolean checkNetwork(Context context) {boolean result;ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo info = manager.getActiveNetworkInfo();if (manager == null || info == null || !info.isAvailable()|| !info.isConnected()) {result = false;} else {result = true;}return result;}}}?
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1 楼 573842281 2012-05-27 压缩包里面没有什么东西啊！