圆指示器不可见
圆指示器不可见
提问于 2018-04-06 18:40:21
我不知道为什么Circle Indicator在横幅布局中不可见。我使用的是库"me.relex:circleindicator"。但它不起作用。我想要在我的imageView下面的circleIndicator，但它看不见。
下面的屏幕截图显示了我想要圆圈指示器的位置。
这是我在mainactivity中的代码：
public class MainActivity extends AppCompatActivity {
DialogInterface.OnClickListener listener;
@BindView(R.id.vp_mainLayout)
ViewPager viewPager;
@BindView(R.id.circleindicator)
CircleIndicator circleIndicator;
// private ViewPager viewPager;
// private CircleIndicator circleIndicator;
int gambar[] = {R.drawable.banner1, R.drawable.banner2,
R.drawable.no_photo,
R.drawable.peta_indonesia};
private int currentPage = -1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
getSupportActionBar().setBackgroundDrawable(new
ColorDrawable(Color.parseColor("#300000ff")));
getSupportActionBar().setBackgroundDrawable(new
ColorDrawable(Color.TRANSPARENT));
getSupportActionBar().setStackedBackgroundDrawable(new
ColorDrawable(Color.parseColor("#550000ff")));
BannerAdapter bannerAdapter = new BannerAdapter(gambar,
MainActivity.this);
viewPager.setAdapter(bannerAdapter);
circleIndicator.setViewPager(viewPager);
bannerAdapter.registerDataSetObserver(circleIndicator.getDataSetObserver());这是我的适配器：
public class BannerAdapter extends PagerAdapter {
int[] gambar;
Activity activity;
public BannerAdapter(int[] gambar, Activity activity) {
this.gambar = gambar;
this.activity = activity;
}
@Override
public int getCount() {
return gambar.length;
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
LayoutInflater inflater = (LayoutInflater)
activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.item_banner, container, false);
ImageView img = v.findViewById(R.id.imgbanner);
Glide.with(activity)
.load(gambar[position])
.into(img);
container.addView(v);
return v;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
}这是我的XML：
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="230dp"
app:cardCornerRadius="0dp">
<android.support.v4.view.ViewPager
android:id="@+id/vp_mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
<me.relex.circleindicator.CircleIndicator
android:id="@+id/circleindicator"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_gravity="bottom"
app:ci_gravity="center" />
</android.support.v7.widget.CardView>
</LinearLayout>这是我的项目横幅：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/imgbanner"
android:layout_width="match_parent"
android:layout_height="180dp"
android:scaleType="centerCrop" />
</LinearLayout>回答 2
Stack Overflow用户
发布于 2019-02-06 21:17:02
默认情况下，CircleIndicator的颜色是白色，因为布局的默认颜色是白色。CircleIndicator不可见。
您可以在XML文件中使用以下属性使其可见
app:ci_drawable="@drawable/white_radius_circle_indicator"
app:ci_drawable_unselected="@drawable/black_radius_circle_indicator"这里，app:ci_drawable用于选定的圆，app:ci_drawable_unselected用于未选定的圆。
res/drawable/white_radius_circle_indicator.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="@color/accent"/>
</shape>res/drawable/black_radius_circle_indicator.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="@android:color/black"/>
</shape>Stack Overflow用户
发布于 2021-06-14 19:31:31
只需使用以下命令提升您的Circle Page指标：
android:translationZ="4dp"至少它对我来说是有效的
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/49690944
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