Kenny Root | b9e80e7 | 2010-08-09 17:25:00 -0700 | [diff] [blame^] | 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.example.android.obbapp; |
| 18 | |
| 19 | import android.app.Activity; |
| 20 | import android.os.Bundle; |
| 21 | import android.os.Environment; |
| 22 | import android.os.storage.OnObbStateChangeListener; |
| 23 | import android.os.storage.StorageManager; |
| 24 | import android.util.Log; |
| 25 | import android.view.View; |
| 26 | import android.view.View.OnClickListener; |
| 27 | import android.widget.Button; |
| 28 | import android.widget.TextView; |
| 29 | |
| 30 | import java.io.File; |
| 31 | |
| 32 | /** |
| 33 | * This class provides a basic demonstration of how to manage an OBB file. It |
| 34 | * provides two buttons: one to mount an OBB and another to unmount an OBB. The |
| 35 | * main feature is that it implements an OnObbStateChangeListener which updates |
| 36 | * some text fields with relevant information. |
| 37 | */ |
| 38 | public class ObbMountActivity extends Activity { |
| 39 | private static final String TAG = "ObbMount"; |
| 40 | |
| 41 | private static String mObbPath; |
| 42 | |
| 43 | private TextView mStatus; |
| 44 | private TextView mPath; |
| 45 | |
| 46 | private StorageManager mSM; |
| 47 | |
| 48 | /** Called with the activity is first created. */ |
| 49 | @Override |
| 50 | public void onCreate(Bundle savedInstanceState) { |
| 51 | super.onCreate(savedInstanceState); |
| 52 | |
| 53 | // Inflate our UI from its XML layout description. |
| 54 | setContentView(R.layout.obb_mount_activity); |
| 55 | |
| 56 | // Hook up button presses to the appropriate event handler. |
| 57 | ((Button) findViewById(R.id.mount)).setOnClickListener(mMountListener); |
| 58 | ((Button) findViewById(R.id.unmount)).setOnClickListener(mUnmountListener); |
| 59 | |
| 60 | // Text indications of current status |
| 61 | mStatus = (TextView) findViewById(R.id.status); |
| 62 | mPath = (TextView) findViewById(R.id.path); |
| 63 | |
| 64 | ObbState state = (ObbState) getLastNonConfigurationInstance(); |
| 65 | |
| 66 | if (state != null) { |
| 67 | mSM = state.storageManager; |
| 68 | mStatus.setText(state.status); |
| 69 | mPath.setText(state.path); |
| 70 | } else { |
| 71 | // Get an instance of the StorageManager |
| 72 | mSM = (StorageManager) getApplicationContext().getSystemService(STORAGE_SERVICE); |
| 73 | } |
| 74 | |
| 75 | mObbPath = new File(Environment.getExternalStorageDirectory(), "test1.obb").getPath(); |
| 76 | } |
| 77 | |
| 78 | OnObbStateChangeListener mEventListener = new OnObbStateChangeListener() { |
| 79 | @Override |
| 80 | public void onObbStateChange(String path, String state) { |
| 81 | Log.d(TAG, "path=" + path + "; state=" + state); |
| 82 | mStatus.setText(state); |
| 83 | if (state.equals(Environment.MEDIA_MOUNTED)) { |
| 84 | mPath.setText(mSM.getMountedObbPath(mObbPath)); |
| 85 | } else { |
| 86 | mPath.setText(""); |
| 87 | } |
| 88 | } |
| 89 | }; |
| 90 | |
| 91 | /** |
| 92 | * A call-back for when the user presses the back button. |
| 93 | */ |
| 94 | OnClickListener mMountListener = new OnClickListener() { |
| 95 | public void onClick(View v) { |
| 96 | try { |
| 97 | // We don't need to synchronize here to avoid clobbering the |
| 98 | // content of mStatus because the callback comes to our main |
| 99 | // looper. |
| 100 | if (mSM.mountObb(mObbPath, null, mEventListener)) { |
| 101 | mStatus.setText(R.string.attempting_mount); |
| 102 | } else { |
| 103 | mStatus.setText(R.string.failed_to_start_mount); |
| 104 | } |
| 105 | } catch (IllegalArgumentException e) { |
| 106 | mStatus.setText(R.string.obb_already_mounted); |
| 107 | Log.d(TAG, "OBB already mounted"); |
| 108 | } |
| 109 | } |
| 110 | }; |
| 111 | |
| 112 | /** |
| 113 | * A call-back for when the user presses the clear button. |
| 114 | */ |
| 115 | OnClickListener mUnmountListener = new OnClickListener() { |
| 116 | public void onClick(View v) { |
| 117 | try { |
| 118 | if (mSM.unmountObb(mObbPath, false, mEventListener)) { |
| 119 | mStatus.setText(R.string.attempting_unmount); |
| 120 | } else { |
| 121 | mStatus.setText(R.string.failed_to_start_unmount); |
| 122 | } |
| 123 | } catch (IllegalArgumentException e) { |
| 124 | mStatus.setText(R.string.obb_not_mounted); |
| 125 | Log.d(TAG, "OBB not mounted"); |
| 126 | } |
| 127 | } |
| 128 | }; |
| 129 | |
| 130 | @Override |
| 131 | public Object onRetainNonConfigurationInstance() { |
| 132 | // Since our OBB mount is tied to the StorageManager, retain it |
| 133 | ObbState state = new ObbState(mSM, mStatus.getText(), mPath.getText()); |
| 134 | return state; |
| 135 | } |
| 136 | |
| 137 | private static class ObbState { |
| 138 | public StorageManager storageManager; |
| 139 | public CharSequence status; |
| 140 | public CharSequence path; |
| 141 | |
| 142 | ObbState(StorageManager storageManager, CharSequence status, CharSequence path) { |
| 143 | this.storageManager = storageManager; |
| 144 | this.status = status; |
| 145 | this.path = path; |
| 146 | } |
| 147 | } |
| 148 | } |