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wjch/TestIntentService.java

Last active December 26, 2015 12:36
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  1. wjch renamed this gist Dec 26, 2015. 1 changed file with 0 additions and 0 deletions.
    0 TestIntentService → TestIntentService.java
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  2. wjch created this gist Dec 26, 2015.
    92 changes: 92 additions & 0 deletions TestIntentService
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    /**
    * 开启一个子线程来运行服务,来处理异步的任务请求
    * An {@link IntentService} subclass for handling asynchronous task requests in
    * a service on a separate handler thread.
    * <p/>
    */
    public class TestIntentService extends IntentService {
    // TODO: Rename actions, choose action names that describe tasks that this
    // IntentService can perform, e.g. ACTION_FETCH_NEW_ITEMS
    private static final String ACTION_DOWNLOAD = "com.mywjch.learnrxjava.action.FOO";
    private static final String ACTION_BAZ = "com.mywjch.learnrxjava.action.BAZ";
    // TODO: Rename parameters
    private static final String EXTRA_PARAM1 = "com.mywjch.learnrxjava.extra.PARAM1";
    private static final String EXTRA_PARAM2 = "com.mywjch.learnrxjava.extra.PARAM2";
    /**
    * 这是一个帮助方法,你调用这个方法时,会使用ACTION_DOWNLOAD这个Action来启动服务来执行它,
    * 如果服务已经在运行,并且在执行其他任务了,那么就会把这个Action放进队列,接下来执行.
    * Starts this service to perform action Foo with the given parameters. If
    * the service is already performing a task this action will be queued.
    */
    // TODO: Customize helper method
    public static void startActionDownload(Context context, String param1, String param2) {
    Intent intent = new Intent(context, TestIntentService.class);
    intent.setAction(ACTION_DOWNLOAD);
    //把传进来的参数放进Intent,进行处理
    intent.putExtra(EXTRA_PARAM1, param1);
    intent.putExtra(EXTRA_PARAM2, param2);
    //启动服务
    context.startService(intent);
    }
    /**
    * 与上面类似
    * Starts this service to perform action Baz with the given parameters. If
    * the service is already performing a task this action will be queued.
    */
    // TODO: Customize helper method
    public static void startActionBaz(Context context, String param1, String param2) {
    Intent intent = new Intent(context, TestIntentService.class);
    intent.setAction(ACTION_BAZ);
    intent.putExtra(EXTRA_PARAM1, param1);
    intent.putExtra(EXTRA_PARAM2, param2);
    context.startService(intent);
    }
    public TestIntentService() {
    super("TestIntentService");
    }
    /**
    * 在IntentService的实现会回调onHandleIntent方法
    */
    @Override
    protected void onHandleIntent(Intent intent) {
    if (intent != null) {
    final String action = intent.getAction();
    //这里判断是哪一个Action
    if (ACTION_DOWNLOAD.equals(action)) {
    final String param1 = intent.getStringExtra(EXTRA_PARAM1);
    final String param2 = intent.getStringExtra(EXTRA_PARAM2);
    //然后直接随便调用个方法就可以了
    suibiandiaoyonggefangfa(param1, param2);
    } else if (ACTION_BAZ.equals(action)) {
    final String param1 = intent.getStringExtra(EXTRA_PARAM1);
    final String param2 = intent.getStringExtra(EXTRA_PARAM2);
    handleActionBaz(param1, param2);
    }
    }
    }
    /**
    *会在backgroung线程里处理这个方法
    */
    private void suibiandiaoyonggefangfa(String param1, String param2) {
    // TODO: 这里来实现这个方法就可以了
    Thread.sleep(3000);
    //然后发广播返回处理结果
    Intent intent =new Intent(HandlerActivity.UPLOAD_RESULT);
    intent.putExtra(ACTION_PATH, path);
    sendBroadcast(intent);
    }
    /**
    * Handle action Baz in the provided background thread with the provided
    * parameters.
    */
    private void handleActionBaz(String param1, String param2) {
    // TODO: Handle action Baz
    throw new UnsupportedOperationException("Not yet implemented");
    }
    @Override
    public void onDestroy() {
    super.onDestroy();
    //队列中的任务完成后IntentService底层会直接调用stopSelf(msg.arg1);来关闭自己
    Log.e("TAG","OnDeatory");
    }
    }