Home | History | Annotate | Download | only in settings 
      1 /*
      2  * Copyright (C) 2007 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.settings;
     18 
     19 import android.app.Activity;
     20 import android.content.ActivityNotFoundException;
     21 import android.content.Intent;
     22 import android.net.Uri;
     23 import android.os.Bundle;
     24 import android.os.SystemProperties;
     25 import android.text.TextUtils;
     26 import android.util.Log;
     27 import android.widget.Toast;
     28 
     29 import java.io.File;
     30 
     31 /**
     32  * The "dialog" that shows from "License" in the Settings app.
     33  */
     34 public class SettingsLicenseActivity extends Activity {
     35     private static final String TAG = "SettingsLicenseActivity";
     36 
     37     private static final String DEFAULT_LICENSE_PATH = "/system/etc/NOTICE.html.gz";
     38     private static final String PROPERTY_LICENSE_PATH = "ro.config.license_path";
     39 
     40     @Override
     41     protected void onCreate(Bundle savedInstanceState) {
     42         super.onCreate(savedInstanceState);
     43 
     44         final String path = SystemProperties.get(PROPERTY_LICENSE_PATH, DEFAULT_LICENSE_PATH);
     45         if (TextUtils.isEmpty(path)) {
     46             Log.e(TAG, "The system property for the license file is empty");
     47             showErrorAndFinish();
     48             return;
     49         }
     50 
     51         final File file = new File(path);
     52         if (!file.exists() || file.length() == 0) {
     53             Log.e(TAG, "License file " + path + " does not exist");
     54             showErrorAndFinish();
     55             return;
     56         }
     57 
     58         // Kick off external viewer due to WebView security restrictions; we
     59         // carefully point it at HTMLViewer, since it offers to decompress
     60         // before viewing.
     61         final Intent intent = new Intent(Intent.ACTION_VIEW);
     62         intent.setDataAndType(Uri.fromFile(file), "text/html");
     63         intent.putExtra(Intent.EXTRA_TITLE, getString(R.string.settings_license_activity_title));
     64         intent.addCategory(Intent.CATEGORY_DEFAULT);
     65         intent.setPackage("com.android.htmlviewer");
     66 
     67         try {
     68             startActivity(intent);
     69             finish();
     70         } catch (ActivityNotFoundException e) {
     71             Log.e(TAG, "Failed to find viewer", e);
     72             showErrorAndFinish();
     73         }
     74     }
     75 
     76     private void showErrorAndFinish() {
     77         Toast.makeText(this, R.string.settings_license_activity_unavailable, Toast.LENGTH_LONG)
     78                 .show();
     79         finish();
     80     }
     81 }
     82