BaseActivity.java

/*
 * Copyright (c) 2015 ThanksMister LLC
 *
 * 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.thanksmister.btcblue.ui;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;

import com.thanksmister.btcblue.Injector;
import com.thanksmister.btcblue.R;
import com.thanksmister.btcblue.utils.ServiceUtils;

import javax.inject.Inject;

import butterknife.ButterKnife;
import rx.functions.Action0;
import timber.log.Timber;

/** Base activity which sets up a per-activity object graph and performs injection. */
public abstract class BaseActivity extends AppCompatActivity 
{
    @Override 
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);

        Injector.inject(this);
    }

    @Override 
    protected void onDestroy() 
    {
        super.onDestroy();

        ButterKnife.reset(this);
    }

    @Override
    public void onPause()
    {
        super.onPause();

        getApplicationContext().unregisterReceiver(connReceiver);
    }

    @Override
    public void onResume() {

        super.onResume();
        
        getApplicationContext().registerReceiver(connReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
    }
    
    // TODO replace with RxAndroid
    private BroadcastReceiver connReceiver = new BroadcastReceiver()
    {
        public void onReceive(Context context, Intent intent) {
            ConnectivityManager connectivityManager = ((ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE));
            NetworkInfo currentNetworkInfo = connectivityManager.getActiveNetworkInfo();
            if(currentNetworkInfo != null && currentNetworkInfo.isConnected()) {
               // do nothing
            } else {
                snack(getString(R.string.error_no_internet));
            }
        }
    };

    protected void reportError(Throwable throwable)
    {
        if(throwable != null && throwable.getLocalizedMessage() != null) {
            Timber.e("Data Error: " + throwable.getLocalizedMessage());
        } else {
            Timber.e("Null Error");
        }
    }

    protected void handleError(Throwable throwable)
    {
        handleError(throwable, "", null);
    }

    protected void handleError(Throwable throwable, String label, Action0 action)
    {
        if(ServiceUtils.isNetworkError(throwable)) {
            Timber.e("Data Error: " + "Code 503");
            snackAction(getString(R.string.error_no_internet), label, action);
        } else if(ServiceUtils.isHttp401Error(throwable)) {
            Timber.e("Data Error: " + "Code 401");
            snackAction(getString(R.string.error_no_internet), label, action);
        } else if(ServiceUtils.isHttp500Error(throwable)) {
            Timber.e("Data Error: " + "Code 500");
            snackAction(getString(R.string.error_service_error), label, action);
        } else if(ServiceUtils.isHttp404Error(throwable)) {
            Timber.e("Data Error: " + "Code 404");
            snackAction(getString(R.string.error_service_error), label, action);
        } else if(ServiceUtils.isHttp400Error(throwable)) {
            snackAction(getString(R.string.error_service_error), label, action);
        } else if(throwable != null && throwable.getLocalizedMessage() != null) {
            Timber.e("Data Error: " + throwable.getLocalizedMessage());
            snackAction(throwable.getLocalizedMessage(), label, action);
        } else {
            snackAction(R.string.error_unknown_error, label, action);
        }
    }
    
    protected void snack(final String message)
    {
        Snackbar.make(findViewById(R.id.coordinatorLayout), message, Snackbar.LENGTH_LONG)
                .show();
    }

    protected void snack(final int message)
    {
        Snackbar.make(findViewById(R.id.coordinatorLayout), message, Snackbar.LENGTH_LONG)
                .show();
    }

    protected void snackAction(final int message, final String actionLabel, final Action0 action0)
    {
        Snackbar.make(findViewById(R.id.coordinatorLayout), message, Snackbar.LENGTH_LONG)
                .setAction(actionLabel, new View.OnClickListener() {
                    @Override
                    public void onClick(View view)
                    {
                        action0.call();
                    }
                })
                .show();
    }

    protected void snackAction(final String message,  final String actionLabel, final Action0 action0)
    {
        Snackbar.make(findViewById(R.id.coordinatorLayout), message, Snackbar.LENGTH_LONG)
                .setAction(actionLabel, new View.OnClickListener() {
                    @Override
                    public void onClick(View view)
                    {
                        action0.call();
                    }
                })
                .show();
    }

    protected void toast(int messageId)
    {
        Toast.makeText(this, messageId, Toast.LENGTH_SHORT).show();
    }


    protected void toast(String message)
    {
        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
    }
}