WaitingLayerHelper.java

package cn.mutils.app.ui.util;

import android.os.Handler;
import android.os.Looper;

import cn.mutils.app.ui.AppActivity;
import cn.mutils.app.ui.Dialoger;

/**
 * Helper class for waiting layer
 */
public class WaitingLayerHelper {

    protected Handler mWaitingLayerHandler;
    protected Runnable mWaitingLayerRunnable;
    protected Dialoger mWaitingDialog;

    protected AppActivity mActivity;

    public WaitingLayerHelper(AppActivity context) {
        mActivity = context;
        mWaitingDialog = mActivity.createWaitingDialog(context);
        if (mWaitingDialog == null) {
            mWaitingDialog = new WaitingDialog(mActivity);
        }
    }

    public void postUpdateWaitingViewState() {
        if (mWaitingLayerHandler == null) {
            mWaitingLayerHandler = new Handler(Looper.getMainLooper());
            mWaitingLayerRunnable = new Runnable() {

                @Override
                public void run() {
                    mWaitingLayerHandler.removeCallbacksAndMessages(null);
                    mActivity.updateWaitingLayerState();
                }
            };
        }
        mWaitingLayerHandler.postDelayed(mWaitingLayerRunnable, 400);
    }

    public void show() {
        if (mWaitingDialog.isShowing()) {
            return;
        }
        mWaitingDialog.show();
    }

    public void hide() {
        if (!mWaitingDialog.isShowing()) {
            return;
        }
        mWaitingDialog.dismiss();
    }

    public void onDestroy() {
        if (mWaitingLayerHandler != null) {
            mWaitingLayerHandler.removeCallbacksAndMessages(null);
        }
        mWaitingDialog.dismiss();
    }

}