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      1 /*
      2  * Copyright (C) 2010 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.phone;
     18 
     19 import com.android.phone.R;
     20 
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.IntentFilter;
     24 import android.os.Bundle;
     25 import android.preference.Preference;
     26 import android.preference.PreferenceActivity;
     27 import android.preference.PreferenceScreen;
     28 import android.net.Uri;
     29 import android.net.ThrottleManager;
     30 import android.util.Log;
     31 
     32 
     33 /**
     34  * Lists the data usage and throttle settings
     35  */
     36 public class DataUsage extends PreferenceActivity {
     37 
     38     private Preference mCurrentUsagePref;
     39     private Preference mTimeFramePref;
     40     private Preference mThrottleRatePref;
     41     private Preference mHelpPref;
     42     private String mHelpUri;
     43 
     44     private DataUsageListener mDataUsageListener;
     45     private ThrottleManager mThrottleManager;
     46 
     47     @Override
     48     protected void onCreate(Bundle icicle) {
     49         super.onCreate(icicle);
     50 
     51         mThrottleManager = (ThrottleManager) getSystemService(Context.THROTTLE_SERVICE);
     52 
     53         addPreferencesFromResource(R.xml.data_usage_settings);
     54 
     55         mCurrentUsagePref = findPreference("throttle_current_usage");
     56         mTimeFramePref = findPreference("throttle_time_frame");
     57         mThrottleRatePref = findPreference("throttle_rate");
     58         mHelpPref = findPreference("throttle_help");
     59 
     60         mHelpUri = mThrottleManager.getHelpUri();
     61         if (mHelpUri == null ) {
     62             getPreferenceScreen().removePreference(mHelpPref);
     63         } else {
     64             mHelpPref.setSummary(getString(R.string.throttle_help_subtext));
     65         }
     66 
     67         mDataUsageListener = new DataUsageListener(this, mCurrentUsagePref,
     68                 mTimeFramePref, mThrottleRatePref);
     69     }
     70 
     71     @Override
     72     protected void onResume() {
     73         super.onResume();
     74         mDataUsageListener.resume();
     75     }
     76 
     77     @Override
     78     protected void onPause() {
     79         super.onPause();
     80         mDataUsageListener.pause();
     81     }
     82 
     83 
     84     @Override
     85     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
     86 
     87         if (preference == mHelpPref) {
     88             try {
     89                 Intent myIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(mHelpUri));
     90                 startActivity(myIntent);
     91             } catch (Exception e) {
     92                 ;
     93             }
     94         }
     95 
     96         return true;
     97     }
     98 }
     99