Class AbsTask

xutils/src/main/java/org/xutils/common/task/AbsTask.java:16–154

Created by wyouflf on 15/6/5. 异步任务基类 @param 任务返回值类型

 * @param <ResultType> 任务返回值类型
 */
public abstract class AbsTask<ResultType> implements Callback.Cancelable {

    private TaskProxy taskProxy = null;
    private final Callback.Cancelable cancelHandler;

    private volatile boolean isCancelled = false;
    private volatile State state = State.IDLE;
    private ResultType result;

    public AbsTask() {
        this(null);
    }

    public AbsTask(Callback.Cancelable cancelHandler) {
        this.cancelHandler = cancelHandler;
    }

    protected abstract ResultType doBackground() throws Throwable;

    protected abstract void onSuccess(ResultType result);

    protected abstract void onError(Throwable ex, boolean isCallbackError);

    protected void onWaiting() {
    }

    protected void onStarted() {
    }

    protected void onUpdate(int flag, Object... args) {
    }

    protected void onCancelled(Callback.CancelledException cex) {
    }

    protected void onFinished() {
    }

    public Priority getPriority() {
        return null;
    }

    public Executor getExecutor() {
        return null;
    }

    public Looper customLooper() {
        return null;
    }

    protected final void update(int flag, Object... args) {
        if (taskProxy != null) {
            taskProxy.onUpdate(flag, args);
        }
    }

    /**
     * invoked via cancel()