小编Jen*_*dra的帖子

我正在尝试设置视图的alpha级别.我在这里阅读文档:

http://developer.android.com/reference/android/widget/RelativeLayout.html

似乎它应该是可能的甚至在我正在开发的Android 2.1(因为我不能看到它说不然)但是当我添加到我的视图

    <View
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_margin="20sp"
    android:background="#ffffff"
   android:alpha="0.9"></View>

我收到一个错误说:

在'android'包中找不到属性'alpha'的资源标识符

如何设置视图的alpha级别？

我有一个mainActivity,它由一个视图分页器中的3个片段活动组成.每个片段由编辑文本组成.如何在水平滑动片段时获取编辑文本的值？我想这样做.下面的代码

public class MainActivity extends FragmentActivity  {

int value = 0;
Context context;
String a = "";

SectionsPagerAdapter mSectionsPagerAdapter;


ViewPager mViewPager;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    // getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    setContentView(R.layout.activity_main);

    // Set up the action bar.
    //final ActionBar actionBar = getActionBar();
//  actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
    mAddButtonB = (Button) findViewById(R.id.addnewB);

    mAddSearchV = findViewById(R.id.addnewSearch);
    mAddButtonB.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            mAddSearchV.setVisibility(View.GONE);
            mSectionsPagerAdapter = new SectionsPagerAdapter(
                    getSupportFragmentManager());
            mViewPager = (ViewPager) findViewById(R.id.customviewpager);
            mViewPager.setAdapter(mSectionsPagerAdapter);


        }
    }); …

在我的工具栏背景颜色中添加一些alpha时,我注意到标题的TextView有一个背景:

这是我的布局:

<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"
         xmlns:app="http://schemas.android.com/apk/res-auto"
         android:background="#0099cc">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:theme="@style/FullscreenActionBarStyle"
        app:titleTextAppearance="@style/ActionBarTitle"/>

    <ImageView
        android:id="@+id/fullscreen_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/image"/>

</FrameLayout>

我的styles.xml:

<resources>
    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>

        <item name="android:windowActionBar">false</item>
        <item name="windowActionBar">false</item>
    </style>

    <style name="FullscreenTheme" parent="AppTheme">
        <item name="android:windowBackground">@null</item>
        <item name="metaButtonBarStyle">?android:attr/buttonBarStyle</item>
        <item name="metaButtonBarButtonStyle">?android:attr/buttonBarButtonStyle</item>

        <item name="android:actionBarStyle">@style/FullscreenActionBarStyle</item>
        <item name="android:windowActionBarOverlay">true</item>
        <!--For compatibility-->
        <item name="actionBarStyle">@style/FullscreenActionBarStyle</item>
        <item name="windowActionBarOverlay">true</item>
    </style>

    <style name="FullscreenActionBarStyle" parent="Widget.AppCompat.ActionBar">
        <item name="background">@color/black_overlay</item>
        <item name="android:background">@color/black_overlay</item>
    </style>

    <style name="ActionBarTitle" parent="TextAppearance.Widget.AppCompat.Toolbar.Title">
        <item …

请帮我解决一个问题.问题是我需要获得卡位置以将此位置传达给另一个活动.当我按下卡上的按钮时,我需要转移这个位置.如何获得卡位？

RVAdapter.java

public class RVAdapter extends RecyclerView.Adapter<RVAdapter.PersonViewHolder> {

    private final static String myLog = "myLog";


    List<ItemsOfRow> items;
    private Context context;


    RVAdapter(List<ItemsOfRow> items, Context context) {
        this.items = items;
        this.context = context;
    }

    @Override
    public int getItemCount() {
        return items.size();
    }

    @Override
    public PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_view, viewGroup, false);
        PersonViewHolder pvh = new PersonViewHolder(v);
        return pvh;
    }

    @Override
    public void onBindViewHolder(PersonViewHolder personViewHolder, int i) {


        personViewHolder.imgGroupImage.setImageBitmap(items.get(i).getTitleImage());
        personViewHolder.txtTitleGroup.setText(items.get(i).getTitleName());
        personViewHolder.txtContentGroup.setText(items.get(i).getTitleContent());


        personViewHolder.btnShare.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View …