src/de/cweiske/ouya/gamelauncher/LaunchGameActivity.java

   1 /*
   2  * Copyright (C) 2012 OUYA, Inc.
   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 de.cweiske.ouya.gamelauncher;
  18
  19 import java.io.File;
  20 import java.io.FileOutputStream;
  21 import java.io.IOException;
  22 import java.io.InputStream;
  23 import java.io.OutputStream;
  24
  25 import android.app.Activity;
  26 import android.content.ComponentName;
  27 import android.content.Intent;
  28 import android.content.res.AssetManager;
  29 import android.net.Uri;
  30 import android.os.Bundle;
  31 import android.os.Environment;
  32
  33 public class LaunchGameActivity extends Activity
  34 {
  35     String assetFilename = "FIXME_ASSETFILENAME";
  36
  37     /**
  38      * Called when the activity is first created.
  39      */
  40     @Override
  41     public void onCreate(Bundle savedInstanceState)
  42     {
  43         super.onCreate(savedInstanceState);
  44
  45         File extractedFile = extractFile(this.assetFilename);
  46         if (extractedFile == null) {
  47                 System.err.println("Failed to extract file " + this.assetFilename);
  48                 finish();
  49                 return;
  50         }
  51
  52         Intent intent = new Intent();
  53         intent.setComponent(new ComponentName("com.explusalpha.Snes9xPlus", "com.imagine.BaseActivity"));
  54         intent.setAction("android.intent.action.VIEW");
  55         intent.setData(Uri.fromFile(extractedFile));
  56
  57                 startActivity(intent);
  58                 finish();
  59                 return;
  60     }
  61
  62         protected File extractFile(String assetFilename)
  63         {
  64                 //File cacheDir = this.getExternalCacheDir();
  65                 //File cacheDir = getExternalFilesDir(null);
  66                 File cacheDir = Environment.getExternalStorageDirectory();
  67                 if (cacheDir == null) {
  68                         return null;
  69                 }
  70                 File dir = new File(
  71                         cacheDir.toString()
  72                         + File.separator
  73                         + "gamelauncher"
  74                 );
  75                 if (!dir.exists()) {
  76                         dir.mkdirs();
  77                 }
  78
  79                 File targetFile = new File(dir.toString() + File.separator + assetFilename);
  80                 if (targetFile.exists()) {
  81                         return targetFile;
  82                 }
  83
  84                 AssetManager assetManager = this.getAssets();
  85                 try {
  86                     InputStream in = assetManager.open("game/" + assetFilename);
  87                     copyFile(in, new FileOutputStream(targetFile));
  88                     return targetFile;
  89                 } catch (IOException e) {
  90                     e.printStackTrace();
  91                 }
  92         return null;
  93         }
  94
  95         protected void copyFile(InputStream in, OutputStream out) throws IOException
  96         {
  97             byte[] buffer = new byte[1024];
  98             int read;
  99             while((read = in.read(buffer)) != -1){
 100               out.write(buffer, 0, read);
 101             }
 102         }
 103 }