我不知道该怎么说
我在CoordinatorLayout中有一个ViewPager的xml文件，
在另一个xml布局（片段布局）中，我有ImageView，
我将片段布局充气起来并显示在viewpager中，
问题在这里：
当我更改（甚至设置）ViewPager（或CoordinatorLayout）背景颜色时，
颜色对我的图片有影响（好像图片在ViewPager / CoordinatorLayout下）
如何禁用此效果？
感谢您的关注
这是屏幕截图：
您会看到图像变绿，但是它应该在顶部并保存为原始mod
这是我的代码：
fragment_pager
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/activity_horizontal_margin"
>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:id="@+id/section_img"
android:layout_width="192dp"
android:layout_height="192dp"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:alpha="0.30"
android:background="@drawable/fab_shadow"
android:scaleType="fitCenter" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:gravity="center"
android:orientation="vertical"
android:padding="@dimen/activity_horizontal_margin">
<TextView
android:id="@+id/section_label"
style="@style/TextAppearance.AppCompat.Headline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@android:color/white"
tools:text="Page One" />
<TextView
style="@style/TextAppearance.AppCompat.Body1"
android:id="@+id/describe"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/activity_horizontal_margin"
android:alpha="0.7"
android:gravity="center"
android:text="Add a long description here about your app's
important feature."
android:textColor="@android:color/white" />
</LinearLayout>
</FrameLayout>
activity_pager
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#5fccff"
>
<android.support.v4.view.ViewPager
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="?attr/actionBarSize"
/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_gravity="bottom"
android:layout_marginBottom="?attr/actionBarSize"
android:alpha="0.12"
android:background="@android:color/white" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
android:paddingEnd="@dimen/activity_horizontal_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingStart="@dimen/activity_horizontal_margin">
<Button
android:id="@+id/intro_btn_skip"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start|center"
android:text="Skip"
android:textColor="@android:color/white" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="horizontal">
<ImageView
android:id="@+id/intro_indicator_0"
android:layout_width="8dp"
android:layout_height="8dp"
android:layout_marginEnd="@dimen/activity_margin_half"
android:layout_marginRight="@dimen/activity_margin_half"
android:background="@drawable/in" />
<ImageView
android:id="@+id/intro_indicator_1"
android:layout_width="8dp"
android:layout_height="8dp"
android:layout_marginEnd="@dimen/activity_margin_half"
android:layout_marginRight="@dimen/activity_margin_half"
android:background="@drawable/out" />
<ImageView
android:id="@+id/intro_indicator_2"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="8dp"
android:layout_height="8dp"
android:background="@drawable/out" />
</LinearLayout>
<Button
android:id="@+id/intro_btn_finish"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|center"
android:text="Finish"
android:textColor="@android:color/white"
android:visibility="gone" />
<ImageButton
android:id="@+id/intro_btn_next"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|center"
android:padding="@dimen/activity_horizontal_margin"
android:src="@drawable/ic_action_add"
android:tint="@android:color/white" />
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
我在哪里设置颜色：
PagerActivity
...
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
getWindow().setStatusBarColor(ContextCompat.getColor(this,
R.color.black_trans80));
}
setContentView(R.layout.activity_pager);
// Create the adapter that will return a fragment for each of the
three
// primary sections of the activity.
mSectionsPagerAdapter = new
SectionsPagerAdapter(getSupportFragmentManager());
mNextBtn = (ImageButton) findViewById(R.id.intro_btn_next);
mSkipBtn = (Button) findViewById(R.id.intro_btn_skip);
mFinishBtn = (Button) findViewById(R.id.intro_btn_finish);
zero = (ImageView) findViewById(R.id.intro_indicator_0);
one = (ImageView) findViewById(R.id.intro_indicator_1);
two = (ImageView) findViewById(R.id.intro_indicator_2);
mCoordinator = (CoordinatorLayout) findViewById(R.id.main_content);
indicators = new ImageView[]{zero, one, two};
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.setPageTransformer(false, new IntroPageTransformer());
mViewPager.setCurrentItem(page);
updateIndicators(page);
final int color1 = ContextCompat.getColor(this, R.color.cyan);
final int color2 = ContextCompat.getColor(this, R.color.orange);
final int color3 = ContextCompat.getColor(this, R.color.green);
final int[] colorList = new int[]{color1, color2, color3};
final ArgbEvaluator evaluator = new ArgbEvaluator();
mViewPager.addOnPageChangeListener(new
ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
/*
color update
*/
int colorUpdate = (Integer)
evaluator.evaluate(positionOffset, colorList[position],
colorList[position == 2 ? position : position + 1]);
mCoordinator.setBackgroundColor(colorUpdate);
}
@Override
public void onPageSelected(int position) {
page = position;
updateIndicators(page);
switch (position) {
case 0:
mCoordinator.setBackgroundColor(color1);
break;
case 1:
mCoordinator.setBackgroundColor(color2);
break;
case 2:
mCoordinator.setBackgroundColor(color3);
break;
}
...
最佳答案
经过一番讨价还价终于找到了一个奇怪的解决方案：
图像的setAlpha（1.0f）可以解决！！！
（这很糟糕，因为它仅适用于API 11及更高版本）
这么奇怪...