| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.apkcachetest; |
| |
| import android.app.Activity; |
| import android.os.Bundle; |
| import android.os.FileUtils; |
| import android.widget.TextView; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| public class Main extends Activity { |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| setContentView(R.layout.hello_activity); |
| File preloadsFileCache = getPreloadsFileCache(); |
| TextView txt = (TextView) findViewById(R.id.text); |
| if (!getApplicationInfo().isPrivilegedApp()) { |
| txt.append("WARNING: App must be installed in /system/priv-app directory to access " |
| + "preloads cache\n"); |
| } |
| txt.append("PreloadsFileCache app directory: " + preloadsFileCache + '\n'); |
| if (!preloadsFileCache.exists()) { |
| txt.append(" --- Directory does not exist ---\n"); |
| } else { |
| File[] files = preloadsFileCache.listFiles(); |
| if (files == null || files.length == 0) { |
| txt.append(" --- No files found ---\n"); |
| } else { |
| for (File file : files) { |
| try { |
| txt.append(" " + file.getName() + ": [" + readTextFile(file) + "]\n"); |
| } catch (IOException e) { |
| txt.append(" " + file.getName() + ": Error " + e + "\n"); |
| e.printStackTrace(); |
| } |
| } |
| txt.append(files.length + " files"); |
| } |
| |
| } |
| } |
| |
| String readTextFile(File file) throws IOException { |
| String s = FileUtils.readTextFile(file, 100, "..."); |
| if (s != null) { |
| s = s.replaceAll("[^\\x20-\\x7E]+", " "); |
| } |
| return s; |
| } |
| } |