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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.tv.tuner.setup;
     18 
     19 import android.app.FragmentManager;
     20 import android.os.AsyncTask;
     21 import android.view.KeyEvent;
     22 import com.android.tv.tuner.TunerHal;
     23 
     24 /** An activity that serves tuner setup process. */
     25 public class LiveTvTunerSetupActivity extends BaseTunerSetupActivity {
     26     private static final String TAG = "LiveTvTunerSetupActivity";
     27 
     28     @Override
     29     protected void executeGetTunerTypeAndCountAsyncTask() {
     30         new AsyncTask<Void, Void, Integer>() {
     31             @Override
     32             protected Integer doInBackground(Void... arg0) {
     33                 return TunerHal.getTunerTypeAndCount(LiveTvTunerSetupActivity.this).first;
     34             }
     35 
     36             @Override
     37             protected void onPostExecute(Integer result) {
     38                 if (!LiveTvTunerSetupActivity.this.isDestroyed()) {
     39                     mTunerType = result;
     40                     if (result == null) {
     41                         finish();
     42                     } else if (!mActivityStopped) {
     43                         showInitialFragment();
     44                     } else {
     45                         mPendingShowInitialFragment = true;
     46                     }
     47                 }
     48             }
     49         }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
     50     }
     51 
     52     @Override
     53     public boolean onKeyUp(int keyCode, KeyEvent event) {
     54         if (keyCode == KeyEvent.KEYCODE_BACK) {
     55             FragmentManager manager = getFragmentManager();
     56             int count = manager.getBackStackEntryCount();
     57             if (count > 0) {
     58                 String lastTag = manager.getBackStackEntryAt(count - 1).getName();
     59                 if (ScanResultFragment.class.getCanonicalName().equals(lastTag) && count >= 2) {
     60                     String secondLastTag = manager.getBackStackEntryAt(count - 2).getName();
     61                     if (ScanFragment.class.getCanonicalName().equals(secondLastTag)) {
     62                         // Pops fragment including ScanFragment.
     63                         manager.popBackStack(
     64                                 secondLastTag, FragmentManager.POP_BACK_STACK_INCLUSIVE);
     65                         return true;
     66                     }
     67                 } else if (ScanFragment.class.getCanonicalName().equals(lastTag)) {
     68                     mLastScanFragment.finishScan(true);
     69                     return true;
     70                 }
     71             }
     72         }
     73         return super.onKeyUp(keyCode, event);
     74     }
     75 }
     76