Merge pull request ReactiveX#85 from hamidp/textview-actions

Add actions for setting TextView text.

Author: JakeWharton

rxandroid/src/main/java/rx/android/view/ViewActions.java

@@ -14,7 +14,7 @@
 package rx.android.view;
 
 import android.view.View;
-
+import android.widget.TextView;
 import rx.functions.Action1;
 
 /**
@@ -112,4 +112,28 @@ public static Action1<? super Boolean> setVisibility(View view) {
     public static Action1<? super Boolean> setVisibility(View view, int visibilityOnFalse) {
         return new ViewActionSetVisibility(view, visibilityOnFalse);
     }
+
+    /**
+     * Set the text of a {@link TextView} based on values emitted by an Observable.
+     */
+    public static Action1<? super CharSequence> setText(final TextView textView) {
+        return new Action1<CharSequence>() {
+            @Override
+            public void call(CharSequence charSequence) {
+                textView.setText(charSequence);
+            }
+        };
+    }
+
+    /**
+     * Set the text of a {@link TextView} based on values emitted by an Observable.
+     */
+    public static Action1<? super Integer> setTextResource(final TextView textView) {
+        return new Action1<Integer>() {
+            @Override
+            public void call(Integer integer) {
+                textView.setText(integer);
+            }
+        };
+    }
 }

rxandroid/src/test/java/rx/android/view/ViewActionSetTextTest.java

@@ -0,0 +1,46 @@
+package rx.android.view;
+
+import android.widget.TextView;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.robolectric.RobolectricTestRunner;
+import rx.subjects.PublishSubject;
+
+import static org.mockito.Mockito.verify;
+
+@RunWith(RobolectricTestRunner.class)
+public class ViewActionSetTextTest {
+
+    private TextView textView;
+
+    @Before
+    public void setUp() {
+        textView = Mockito.mock(TextView.class);
+    }
+
+    @Test
+    public void testSetsTextViewCharSequence() {
+        final PublishSubject<String> subject = PublishSubject.create();
+        subject.subscribe(ViewActions.setText(textView));
+
+        subject.onNext("Hello");
+        verify(textView).setText("Hello");
+
+        subject.onNext("World");
+        verify(textView).setText("World");
+    }
+
+    @Test
+    public void testSetsTextViewTextResource() {
+        final PublishSubject<Integer> subject = PublishSubject.create();
+        subject.subscribe(ViewActions.setTextResource(textView));
+
+        subject.onNext(1);
+        verify(textView).setText(1);
+
+        subject.onNext(3);
+        verify(textView).setText(3);
+    }
+}