Enabling camera and disk access in the manifest

The AndroidManifest.xml (the manifest) file specifies an Android app's requirements and components. Compared to the default manifest, the manifest in Second Sight needs to do the following additional work:

• Ensure that the device has at least one camera.
• Get permission to use the camera.
• Get permission to write the files to the permanent storage.
• Restrict the screen orientation to landscape mode because OpenCV's camera preview does not handle portrait mode well. For more description over the issue and some attempted workarounds, see the StackOverflow thread at http://answers.opencv.org/question/7143/mirror-image-on-android-front-camera/. Also see the blog post by Yu Lu and the comments posted by her readers at http://littlecheesecake.wordpress.com/2012/03/12/display-orientation-issue-when-working-with-opencv-on-android/.
• Register the second activity.

We can accomplish these tasks by editing the uses-permission, uses-feature, and activity tags in the manifest.

Note

For details about the Android manifest, see the official documentation at http://developer.android.com/guide/topics/manifest/manifest-intro.html.

Open AndroidManifest.xml, which is under the project's root directory. View it in the source code mode by clicking on the tab labeled AndroidManifest.xml. Edit the file by adding the highlighted code in the following snippet:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=
  "http://schemas.android.com/apk/res/android"
  package="com.nummist.secondsight"
  android:versionCode="1"
  android:versionName="1.0">

  <uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />
    
  <uses-permission android:name="android.permission.CAMERA" />
  <uses-permission android:name=
    "android.permission.WRITE_EXTERNAL_STORAGE" />
    
  <uses-feature android:name="android.hardware.camera" />
  <uses-feature android:name="android.hardware.camera.autofocus"
    android:required="false" />
  <uses-feature android:name="android.hardware.camera.flash"
    android:required="false" />
    
  <application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme">
    <activity
      android:name="com.nummist.secondsight.CameraActivity"
      android:label="@string/app_name"
      android:screenOrientation="landscape">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name=
          "android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
    <activity
      android:name="com.nummist.secondsight.LabActivity"
      android:label="@string/app_name"
      android:screenOrientation="landscape">
    </activity>
  </application>
</manifest>