rewrite Instacapture in Kotlin

README.md

@@ -20,7 +20,7 @@ Add this to your module `build.gradle` file:
 ```gradle
 dependencies {
 	...
-	 compile "com.github.tarek360:instacapture:2.0.0-beta"
+	 compile "com.github.tarek360:instacapture:kotlin-2.0.0-beta"
 }
 ```
 

app/src/main/java/com/tarek360/sample/BaseSampleActivity.java

@@ -24,7 +24,7 @@ public abstract class BaseSampleActivity extends AppCompatActivity
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        Instacapture.enableLogging(true);
+        Instacapture.INSTANCE.enableLogging(true);
     }
 
     @Override
@@ -40,7 +40,7 @@ protected void showAlertDialog() {
 
     protected void captureScreenshot(@Nullable View... ignoredViews) {
 
-        Instacapture.capture(this, new SimpleScreenCapturingListener() {
+        Instacapture.INSTANCE.capture(this, new SimpleScreenCapturingListener() {
             @Override
             public void onCaptureComplete(Bitmap bitmap) {
 
@@ -58,7 +58,7 @@ public void call(File file) {
         }, ignoredViews);
 
 
-        Instacapture.captureRx(this, ignoredViews).subscribe(new Action1<Bitmap>() {
+        Instacapture.INSTANCE.captureRx(this, ignoredViews).subscribe(new Action1<Bitmap>() {
             @Override
             public void call(Bitmap bitmap) {
 

app/src/main/java/com/tarek360/sample/utility/Utility.java

@@ -95,7 +95,7 @@ public void call(final Subscriber<? super File> subscriber) {
                     subscriber.onNext(screenshotFile);
                     subscriber.onCompleted();
 
-                    Logger.d("Screenshot saved to " + screenshotFile.getAbsolutePath());
+                    Logger.INSTANCE.d("Screenshot saved to " + screenshotFile.getAbsolutePath());
                 } catch (final IOException e) {
                     subscriber.onError(e);
                 } finally {

instacapture/src/main/java/com/tarek360/instacapture/ActivityReferenceManager.kt

@@ -0,0 +1,44 @@
+package com.tarek360.instacapture
+
+import android.app.Activity
+import android.os.Build
+
+import java.lang.ref.WeakReference
+
+/**
+ * Created by tarek on 5/17/16.
+ */
+class ActivityReferenceManager {
+
+    private var mActivity: WeakReference<Activity>? = null
+
+    fun setActivity(activity: Activity) {
+        this.mActivity = WeakReference(activity)
+    }
+
+    val validatedActivity: Activity?
+        get() {
+            if (mActivity == null) {
+                return null
+            }
+
+            val activity = mActivity!!.get()
+            if (!isActivityValid(activity)) {
+                return null
+            }
+
+            return activity
+        }
+
+    private fun isActivityValid(activity: Activity?): Boolean {
+        if (activity == null) {
+            return false
+        }
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return !activity.isFinishing && !activity.isDestroyed
+        } else {
+            return !activity.isFinishing
+        }
+    }
+}

instacapture/src/main/java/com/tarek360/instacapture/Instacapture.kt

@@ -0,0 +1,83 @@
+package com.tarek360.instacapture
+
+import android.app.Activity
+import android.graphics.Bitmap
+import android.view.View
+
+import com.tarek360.instacapture.exception.ActivityNotRunningException
+import com.tarek360.instacapture.listener.ScreenCaptureListener
+import com.tarek360.instacapture.screenshot.ScreenshotProvider
+import com.tarek360.instacapture.utility.Logger
+
+import rx.Observable
+import rx.Subscriber
+import rx.android.schedulers.AndroidSchedulers
+
+/**
+ * Created by tarek on 5/20/17.
+ */
+
+object Instacapture {
+
+    private val MESSAGE_IS_ACTIVITY_RUNNING = "Is your activity running?"
+    private val ERROR_SCREENSHOT_CAPTURE_FAILED = "Screenshot capture failed"
+
+    fun capture(activity: Activity,
+                screenCaptureListener: ScreenCaptureListener,
+                vararg ignoredViews: View) {
+
+        screenCaptureListener.onCaptureStarted()
+
+        captureRx(activity, *ignoredViews).subscribe(object : Subscriber<Bitmap>() {
+            override fun onCompleted() {}
+
+            override fun onError(e: Throwable) {
+                Logger.e(ERROR_SCREENSHOT_CAPTURE_FAILED)
+                Logger.printStackTrace(e)
+                screenCaptureListener.onCaptureFailed(e)
+            }
+
+            override fun onNext(bitmap: Bitmap) {
+                screenCaptureListener.onCaptureComplete(bitmap)
+            }
+        })
+
+    }
+
+    fun captureRx(activity: Activity,
+                  vararg ignoredViews: View): Observable<Bitmap> {
+
+        val activityReferenceManager = ActivityReferenceManager()
+        activityReferenceManager.setActivity(activity)
+
+        val validatedActivity = activityReferenceManager.validatedActivity ?:
+                return Observable.error<Bitmap>(ActivityNotRunningException(MESSAGE_IS_ACTIVITY_RUNNING))
+
+        val screenshotProvider = ScreenshotProvider()
+
+        return screenshotProvider.getScreenshotBitmap(validatedActivity,
+                ignoredViews.asList().toTypedArray()).observeOn(AndroidSchedulers.mainThread())
+    }
+
+    /**
+     * Get single tone instance.
+
+     * @param activity .
+     * *
+     * @return Instacapture single tone instance.
+     */
+
+    /**
+     * Enable logging or disable it.
+
+     * @param enable set it true to enable logging.
+     */
+    fun enableLogging(enable: Boolean) {
+        if (enable) {
+            Logger.enable()
+        } else {
+            Logger.disable()
+        }
+    }
+
+}

instacapture/src/main/java/com/tarek360/instacapture/exception/ActivityNotRunningException.kt

@@ -0,0 +1,16 @@
+package com.tarek360.instacapture.exception
+
+/**
+ * Created by tarek on 5/31/16.
+ */
+
+/**
+ * This exception is thrown when the Activity is finished or destroyed.
+ */
+class ActivityNotRunningException : RuntimeException {
+
+    constructor()
+
+    constructor(name: String) : super(name)
+}
+