MyUtils, 常用工具类

CountDown.java的使用

只需在程序中调用简简单单的一行代码即可实现倒计时功能，当然也可以添加监听事件 new CountDown(textView, "%s秒", 10).start();

DoubleClickExitDetector的使用

DoubleClickExitDetector exitDetector = new DoubleClickExitDetector(this); @Override public void onBackPressed() { if (exitDetector.onClick()) { super.onBackPressed(); } }

SSLUtil的使用

Android HTTPS如何10分钟实现自签名SSL证书

proguard的使用

ProGuard通过删除无用代码，将代码中类名、方法名、属性名用晦涩难懂的名称重命名从而达到代码混淆、压缩和优化的功能可以使用该链接添加配置信息参考参考

APK瘦身

(https://zhuanlan.zhihu.com/p/21962184)

EmptyService和WeakAsyncTask的使用

EmptyService ： Background Service that is used to keep our process alive long enough for background threads to finish. Started and stopped directly by specific background tasks when needed.

new UpdateTask(this).execute(diff);

        /**
            * Background task that persists changes to {@link Groups#GROUP_VISIBLE},
            * showing spinner dialog to user while updating.
            */
           public static class UpdateTask extends
                   WeakAsyncTask<ArrayList<ContentProviderOperation>, Void, Void, Activity> {
               private ProgressDialog mProgress;
       
               public UpdateTask(Activity target) {
                   super(target);
               }
       
               /** {@inheritDoc} */
               @Override
               protected void onPreExecute(Activity target) {
                   final Context context = target;
       
                   mProgress = ProgressDialog.show(
                           context, null, context.getText(R.string.savingDisplayGroups));
       
                   // Before starting this task, start an empty service to protect our
                   // process from being reclaimed by the system.
                   context.startService(new Intent(context, EmptyService.class));
               }
       
               /** {@inheritDoc} */
               @Override
               protected Void doInBackground(
                       Activity target, ArrayList<ContentProviderOperation>... params) {
                   final Context context = target;
                   final ContentValues values = new ContentValues();
                   final ContentResolver resolver = context.getContentResolver();
       
                   try {
                       final ArrayList<ContentProviderOperation> diff = params[0];
                       resolver.applyBatch(ContactsContract.AUTHORITY, diff);
                   } catch (RemoteException e) {
                       Log.e(TAG, "Problem saving display groups", e);
                   } catch (OperationApplicationException e) {
                       Log.e(TAG, "Problem saving display groups", e);
                   }
       
                   return null;
               }
       
               /** {@inheritDoc} */
               @Override
               protected void onPostExecute(Activity target, Void result) {
                   final Context context = target;
       
                   try {
                       mProgress.dismiss();
                   } catch (Exception e) {
                       Log.e(TAG, "Error dismissing progress dialog", e);
                   }
       
                   target.finish();
       
                   // Stop the service that was protecting us
                   context.stopService(new Intent(context, EmptyService.class));
               }
           }

proguard 配置

Proguard-Config 可以参考这个库,可以把该库中的相应lib对应的文件,直接copy文件中内容到proguard-rules.pro

android M 运行时权限

参考学习的开源库

SystemBarTint 系统栏管理器，我把它用在ZBLibrary的BaseActivity中实现了状态栏沉浸。 ZBLibrary 很多东西是从这个库里面学习copy

BurningZhao/MyUtils