Update the Bazel sample app to demonstrate the support library syntax.

Also removes some outdated comments in the README.md.

--
PiperOrigin-RevId: 142705870
MOS_MIGRATED_REVID=142705870

examples/android/README.md

@@ -5,22 +5,20 @@ android_sdk_repository(
     name="androidsdk",
     path="<full path to your Android SDK>",
     api_level=<api level>,
-    build_tools_version="<build tools version>")
+)
 
 android_ndk_repository(
     name="androidndk",
     path="<path to your Android NDK>",
-    api_level=<api_level>)
+    api_level=<api_level>,
+)
 ```
-For the `android_sdk_repository` rule, the values of the `api_level` and
-`build_tools_version` attributes correspond, respectively, to directories
-containing specific versions of the `android.jar` file and build tools. For
-example, if `path=/Users/xyzzy/Library/Android/sdk`,
-`api_level=21`, and `build_tools_version="21.1.1"` (note that
-quotes are required in the second case), then your SDK must contain the
-directories
-`/Users/xyzzy/Library/Android/sdk/platforms/android-21` and
-`/Users/xyzzy/Library/Android/sdk/build-tools/21.1.1`.
+
+For the `android_sdk_repository` rule, the value of `api_level` corresponds to
+a directory in the SDK containing the specific version of `android.jar` to
+compile against. For example, if `path = "/Users/xyzzy/Library/Android/sdk"` and
+`api_level = 21`, then the directory
+`/Users/xyzzy/Library/Android/sdk/platforms/android-21` must exist.
 
 Similarly, for the `android_ndk_repository` rule, the value of the `api_level`
 attribute corresponds to a directory containing the NDK libraries for that
@@ -29,17 +27,17 @@ API level. For example, if
 `api_level=21`, then you your NDK must contain the directory
 `/Users/xyzzy/Library/Android/android-ndk-r10e/platforms/android-21`.
 
+The example `android_binary` depends on
+`@androidsdk//com.android.support:appcompat-v7-25.0.0`, so you will need to
+install the Google Support Libraries version 25.0.0 from the Android SDK
+Manager.
+
 The following command can be used to build the example app:
 
 ```
 bazel build //examples/android/java/bazel:hello_world
 ```
 
-Yes, we know that this is a little clunky. We are working on the following things (and more):
-
- * Supporting other architectures than `armeabi-v7a` and compilers other than GCC 4.9
- * Eliminating the big ugly deprecation message from the console output of Bazel
-
 We also have a nice way to speed up the edit-compile-install development cycle for physical Android devices and emulators: Bazel knows what code changed since the last build, and can use this knowledge to install only the changed code to the device. This currently works with L devices and changes to Java code and Android resources. To try this out, take an `android_binary` rule and:
 
  * Set the `proguard_specs` attribute to `[]` (the empty list) or just omit it altogether

examples/android/java/bazel/AndroidManifest.xml

@@ -8,7 +8,8 @@
         android:targetSdkVersion="21" />
 
     <application
-        android:label="Bazel App" >
+        android:label="Bazel App"
+        android:theme="@style/MyTheme" >
         <activity
             android:name="bazel.MainActivity"
             android:label="Bazel" >

examples/android/java/bazel/BUILD

@@ -15,11 +15,12 @@ android_binary(
         "MainActivity.java",
         "Jni.java",
     ]),
-    legacy_native_support = 0,
     manifest = "AndroidManifest.xml",
+    resource_files = glob(["res/**"]),
     deps = [
         ":jni",
         ":lib",
+        "@androidsdk//com.android.support:appcompat-v7-25.0.0",
     ],
 )
 

examples/android/java/bazel/MainActivity.java

@@ -1,13 +1,13 @@
 package bazel;
 
-import android.app.Activity;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 
 /**
  * Main class for the Bazel Android "Hello, World" app.
  */
-public class MainActivity extends Activity {
+public class MainActivity extends AppCompatActivity {
   @Override
   public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);

examples/android/java/bazel/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <item name="primary" type="color">#FF99CC00</item>
+</resources>

examples/android/java/bazel/res/values/styles.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="MyTheme" parent="Theme.AppCompat">
+        <item name="colorPrimary">@color/primary</item>
+    </style>
+</resources>