Fix some linter warnings

PiperOrigin-RevId: 748003827

demos/effect/src/main/assets/media.playlist.json

@@ -1,9 +1,9 @@
 [
   {
-    "name": "Cats -> Dogs",
+    "name": "Dogs Short -> Dogs",
     "playlist": [
       {
-        "uri": "https://html5demos.com/assets/dizzy.mp4"
+        "uri": "https://storage.googleapis.com/exoplayer-test-media-1/mp4/android-screens-10s.mp4"
       },
       {
         "uri": "https://storage.googleapis.com/exoplayer-test-media-1/mkv/android-screens-lavf-56.36.100-aac-avc-main-1280x720.mkv"

demos/effect/src/main/java/androidx/media3/demo/effect/EffectActivity.kt

@@ -90,6 +90,7 @@ import androidx.media3.effect.TextureOverlay
 import androidx.media3.exoplayer.ExoPlayer
 import androidx.media3.ui.PlayerView
 import com.google.common.collect.ImmutableList
+import java.util.Locale
 import kotlinx.coroutines.launch
 
 class EffectActivity : ComponentActivity() {
@@ -364,7 +365,7 @@ class EffectActivity : ComponentActivity() {
             Slider(
               value = effectControlsState.contrastValue,
               onValueChange = { newContrastValue ->
-                val newRoundedContrastValue = "%.2f".format(newContrastValue).toFloat()
+                val newRoundedContrastValue = "%.2f".format(Locale.ROOT, newContrastValue).toFloat()
                 onEffectControlsStateChange(
                   effectControlsState.copy(
                     effectsChanged = true,
@@ -437,7 +438,7 @@ class EffectActivity : ComponentActivity() {
               Slider(
                 value = effectControlsState.textOverlayAlpha,
                 onValueChange = { newAlphaValue ->
-                  val newRoundedAlphaValue = "%.2f".format(newAlphaValue).toFloat()
+                  val newRoundedAlphaValue = "%.2f".format(Locale.ROOT, newAlphaValue).toFloat()
                   onEffectControlsStateChange(
                     effectControlsState.copy(
                       effectsChanged = effectControlsState.textOverlayText != null,

libraries/cast/src/test/java/androidx/media3/cast/CastPlayerTest.java

@@ -1930,7 +1930,7 @@ public class CastPlayerTest {
 
     assertThat(castPlayer.getPlaylistMetadata()).isEqualTo(metadata);
 
-    verify(mockListener, times(1)).onPlaylistMetadataChanged(metadata);
+    verify(mockListener).onPlaylistMetadataChanged(metadata);
   }
 
   @Test
@@ -1948,7 +1948,7 @@ public class CastPlayerTest {
     castPlayer.addListener(mockListener);
     castPlayer.setDeviceVolume(volumeToSet, /* flags= */ 0);
 
-    verify(mockListener, times(1)).onDeviceVolumeChanged(volumeToSet, /* muted= */ false);
+    verify(mockListener).onDeviceVolumeChanged(volumeToSet, /* muted= */ false);
     verify(mockCastSession).setVolume((double) volumeToSet / maxVolume);
     assertThat(castPlayer.getDeviceVolume()).isEqualTo(volumeToSet);
 
@@ -1957,7 +1957,7 @@ public class CastPlayerTest {
     when(mockCastSession.getVolume()).thenReturn(newCastSessionVolume);
     castListener.onVolumeChanged();
     assertThat(castPlayer.getDeviceVolume()).isEqualTo(expectedDeviceVolume);
-    verify(mockListener, times(1)).onDeviceVolumeChanged(volumeToSet, /* muted= */ false);
+    verify(mockListener).onDeviceVolumeChanged(volumeToSet, /* muted= */ false);
   }
 
   @Test
@@ -1965,14 +1965,14 @@ public class CastPlayerTest {
     castPlayer.addListener(mockListener);
     castPlayer.setDeviceMuted(true, /* flags= */ 0);
 
-    verify(mockListener, times(1)).onDeviceVolumeChanged(0, /* muted= */ true);
+    verify(mockListener).onDeviceVolumeChanged(0, /* muted= */ true);
     verify(mockCastSession).setMute(true);
-    assertThat(castPlayer.isDeviceMuted()).isEqualTo(true);
+    assertThat(castPlayer.isDeviceMuted()).isTrue();
 
     when(mockCastSession.isMute()).thenReturn(false);
     castListener.onVolumeChanged();
-    assertThat(castPlayer.isDeviceMuted()).isEqualTo(false);
+    assertThat(castPlayer.isDeviceMuted()).isFalse();
-    verify(mockListener, times(1)).onDeviceVolumeChanged(0, /* muted= */ false);
+    verify(mockListener).onDeviceVolumeChanged(0, /* muted= */ false);
   }
 
   private int[] createMediaQueueItemIds(int numberOfIds) {