Android Open Source - EasyJobs-android Easy Jobs Base

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License

The source code is released under:

Copyright (c) 2013, Cai Guanhao (Choi Goon-ho) All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditio...

Java Source Code

package com.cghio.easyjobs;
//w ww. j  a v  a  2s . c  o m
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.util.Base64;
import android.view.MenuItem;

import org.apache.http.Header;

public class EasyJobsBase extends ActionBarActivity {

    protected final int TIMEOUT = 5000;
    protected final int MAX_API_VERSION = 1;
    protected static final String IF_NONE_MATCH = "If-None-Match";
    protected static final String ETAG = "ETag";

    private ProgressDialog dialog;
    private Handler dialogHandler;

    private static final String ETAG_FILE = "etags";
    private static final String NOT_MODIFIED = "Not Modified";

    @Override
    public void onStop() {
        super.onStop();
        hideLoading();
    }

    protected String getHeader(Header[] headers, String key) {
        for (Header header : headers) {
            if (header.getName().equals(key)) {
                return header.getValue();
            }
        }
        return "";
    }

    protected void saveETagAndContent(String url, String etag, String content) {
        SharedPreferences eTags = getSharedPreferences(ETAG_FILE, 0);
        SharedPreferences.Editor editor = eTags.edit();
        editor.putString(Base64.encodeToString(url.getBytes(), Base64.NO_WRAP).toLowerCase(), etag);
        editor.putString(Base64.encodeToString(url.getBytes(), Base64.NO_WRAP).toUpperCase(),
                Base64.encodeToString(content.getBytes(), Base64.NO_WRAP));
        editor.commit();
    }

    protected String getEtag(String url) {
        String key = Base64.encodeToString(url.getBytes(), Base64.NO_WRAP).toLowerCase();
        SharedPreferences eTags = getSharedPreferences(ETAG_FILE, 0);
        return eTags.getString(key, "");
    }

    protected String getEtagContent(String url) {
        String key = Base64.encodeToString(url.getBytes(), Base64.NO_WRAP).toUpperCase();
        SharedPreferences eTags = getSharedPreferences(ETAG_FILE, 0);
        String content = eTags.getString(key, "");
        if (content.length() > 0) {
            content = new String(Base64.decode(content, Base64.NO_WRAP));
        }
        return content;
    }

    protected void removeEtagContent(String url) {
        String key = Base64.encodeToString(url.getBytes(), Base64.NO_WRAP);
        SharedPreferences eTags = getSharedPreferences(ETAG_FILE, 0);
        SharedPreferences.Editor editor = eTags.edit();
        editor.remove(key.toLowerCase());
        editor.remove(key.toUpperCase());
        editor.commit();
    }

    protected void clearEtags() {
        SharedPreferences eTags = getSharedPreferences(ETAG_FILE, 0);
        SharedPreferences.Editor editor = eTags.edit();
        editor.clear();
        editor.commit();
    }

    protected boolean isNotModified(Throwable e) {
        return e != null && e.getMessage() != null && e.getMessage().equals(NOT_MODIFIED);
    }

    protected void showSimpleErrorDialog(String message) {
        AlertDialog alertDialog = new AlertDialog.Builder(this).create();
        alertDialog.setMessage(message);
        alertDialog.setTitle(R.string.error);
        alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, getString(R.string.ok), (Message) null);
        alertDialog.show();
    }

    protected void showLoading() {
        dialog = new ProgressDialog(this);
        dialog.setMessage(getString(R.string.loading));
        dialog.setCancelable(false);
        if (dialogHandler == null) {
            dialogHandler = new Handler();
        }
        dialogHandler.postDelayed(new Runnable() {
            public void run() {
                if (dialog != null) dialog.show();
            }
        }, 600);
        dialogHandler.postDelayed(new Runnable() {
            public void run() {
                hideLoading();
            }
        }, TIMEOUT);
    }

    protected void hideLoading() {
        if (dialogHandler != null) {
            dialogHandler.removeCallbacksAndMessages(null);
            dialogHandler = null;
        }
        if (dialog != null) {
            dialog.dismiss();
            dialog = null;
        }
    }

    @SuppressWarnings("deprecation")
    @SuppressLint("NewApi")
    protected void copyText(String text) {
        int sdk = android.os.Build.VERSION.SDK_INT;
        if(sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
            android.text.ClipboardManager clipboard = (android.text.ClipboardManager)
                    getSystemService(Context.CLIPBOARD_SERVICE);
            clipboard.setText(text);
        } else {
            android.content.ClipboardManager clipboard = (android.content.ClipboardManager)
                    getSystemService(Context.CLIPBOARD_SERVICE);
            android.content.ClipData clip = android.content.ClipData.newPlainText(text, text);
            clipboard.setPrimaryClip(clip);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.about:
                showAboutInfo();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    protected void showAboutInfo() {
        String version = "";
        try {
            PackageManager manager = getPackageManager();
            String name = getPackageName();
            if (manager != null && name != null) {
                PackageInfo info = manager.getPackageInfo(name, 0);
                if (info != null) {
                    version = " v" + info.versionName;
                }
            }
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        AlertDialog alertDialog = new AlertDialog.Builder(this).create();
        alertDialog.setMessage(getString(R.string.about_info));
        alertDialog.setTitle(getString(R.string.about) + " " + getString(R.string.app_name) + version);
        alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, getString(R.string.about_visit_homepage),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        Intent intent = new Intent(Intent.ACTION_VIEW,
                                Uri.parse("https://github.com/qnn/EasyJobs-android"));
                        startActivity(intent);
                    }
                });
        alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE, getString(R.string.close), (Message) null);
        alertDialog.show();
    }

}

Java Source Code List

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