andorid封装自动滚动TextView，没有焦点，有两种滚动方式

最新推荐文章于 2021-05-28 03:49:46 发布

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最新推荐文章于 2021-05-28 03:49:46 发布

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分类专栏： android/java 文章标签：自动滚动TextView 没有焦点 android

本文链接：https://blog.youkuaiyun.com/dashenid/article/details/77451460

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为了解决使用原生自动滚动的TextView，在ListView上item不能点击，是因为获取焦点所以不能点击，还有就是只有一种方式的滚动。

关于ScreenUtils 点击打开链接

主要代码：

package com.sun.framework.CustomizeVC;

import android.content.Context;
import android.os.Handler;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.sun.framework.Utils.ScreenUtils;

/**
 * Created by apple on 2017/4/21.
 */

public class AutoHorizontalScrollTextView extends RelativeLayout{

    Context context;
    private final Handler handler = new Handler();
    RelativeLayout contentRelativeLayout;
    HorizontalScrollView scrollView;
    boolean isRight;
    TextView textView,textViewTwo;
    CharSequence text;
    RelativeLayout.LayoutParams leftViewParams,rightViewParams;
    AutoHorizontalScrollDirectionEnum autoHorizontalScrollDirectionEnum;
    ScreenUtils screenUtils;
    public int mDelayMillis;//滚动延迟毫秒数
    public int mScrollEdgeDelayMillis;//滚动到边缘延迟毫秒数

    public AutoHorizontalScrollTextView(Context context) {
        super(context);
    }

    public AutoHorizontalScrollTextView(Context context, AttributeSet attrs) {
        this(context, attrs, -1);
    }

    public AutoHorizontalScrollTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    private void init(Context context) {
        this.context = context;
        text = "——";
        mDelayMillis = 100;
        mScrollEdgeDelayMillis = 1000;
        screenUtils = new ScreenUtils(context);
        refreshAutoHorizontalScrollTextView();
    }

    private void refreshAutoHorizontalScrollTextView(){
        if (this.getChildCount() > 0){
            this.removeAllViews();
        }
        scrollView = new HorizontalScrollView(context);
        scrollView.setOverScrollMode(View.OVER_SCROLL_NEVER);
        scrollView.setHorizontalScrollBarEnabled(false);
        scrollView.setHorizontalFadingEdgeEnabled(false);
        scrollView.setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                return true;//禁止手动滑动
            }
        });
        this.addView(scrollView);
        RelativeLayout.LayoutParams scrollViewParams = (RelativeLayout.LayoutParams) scrollView.getLayoutParams();
        scrollViewParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
        scrollViewParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
        scrollView.setHorizontalScrollBarEnabled(false);


        contentRelativeLayout = new RelativeLayout(context);
        scrollView.addView(contentRelativeLayout);
        FrameLayout.LayoutParams  contentParams = (FrameLayout.LayoutParams) contentRelativeLayout.getLayoutParams();
        contentParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
        contentParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
        cancelFocus(contentRelativeLayout);

        LinearLayout linearLayout = new LinearLayout(context);
        linearLayout.setOrientation(LinearLayout.HORIZONTAL);
        contentRelativeLayout.addView(linearLayout);
        RelativeLayout.LayoutParams linearLayoutParams = (RelativeLayout.LayoutParams) linearLayout.getLayoutParams();
        linearLayoutParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
        linearLayoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;

        textView = new TextView(context);
        textView.setText(text);
        linearLayout.addView(textView);
        LinearLayout.LayoutParams textViewParams = (LinearLayout.LayoutParams) textView.getLayoutParams();
        textViewParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
        textViewParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;

        textViewTwo = new TextView(context);
        textViewTwo.setText(text);
        textViewTwo.setMaxLines(1);
        linearLayout.addView(textViewTwo);
        ScreenUtils.ViewWidthHeight(scrollView, new ScreenUtils.ViewOnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout(View view, int width, int Height) {
                LinearLayout.LayoutParams textView2Params = (LinearLayout.LayoutParams) textViewTwo.getLayoutParams();
                textView2Params.width = width;
                textView2Params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
            }
        });
        int leftOrRight = screenUtils.dp2px(16);
        setTextViewPadding(leftOrRight,0,leftOrRight,0);
//        View leftShadowView = new View(context);
//        leftShadowView.setBackgroundColor(Color.argb(50,255,255,255));
//
//        this.addView(leftShadowView);
//        leftViewParams = (RelativeLayout.LayoutParams) leftShadowView.getLayoutParams();
//        leftViewParams.width = 20;
//
//        View rightShadowView = new View(context);
//        rightShadowView.setBackgroundColor(Color.argb(50,255,255,255));
//        this.addView(rightShadowView);
//        rightViewParams = (RelativeLayout.LayoutParams) rightShadowView.getLayoutParams();
//        rightViewParams.width = 20;
//        rightViewParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);

        cancelFocus(this,scrollView,contentRelativeLayout,linearLayout,textView,textViewTwo);

        handler.post(ScrollRunnable);
    }

    private void cancelFocus(View... views){
        for (View view : views){
            view.setFocusable(false);
            view.setFocusableInTouchMode(false);
        }

    }

    private Runnable ScrollRunnable = new Runnable() {
        @Override
        public void run() {
            int i = mDelayMillis;
            int off = contentRelativeLayout.getMeasuredWidth() - scrollView.getWidth();
            if (off > 0) {
                if (scrollView.getScrollX() == off) {
                    isRight = false;
                    if (autoHorizontalScrollDirectionEnum == AutoHorizontalScrollDirectionEnum.Left){
                        scrollView.scrollTo(0,0);
                    }
                    i = mScrollEdgeDelayMillis;
                }

                if (scrollView.getScrollX() == 0) {
                    isRight = true;
                    i = mScrollEdgeDelayMillis;

                }

                if (isRight){
                    scrollView.scrollBy(5, 0);
                }else  {
                    if (autoHorizontalScrollDirectionEnum == AutoHorizontalScrollDirectionEnum.Left_Right) {
                        scrollView.scrollBy(-(5), 0);
                    }
                }
                handler.postDelayed(this, i);
            }
        }
    };

    public RelativeLayout getContentRelativeLayout() {
        return contentRelativeLayout;
    }

    public TextView getTextView() {
        return textView;
    }

    public TextView getTextViewTwo() {
        return textViewTwo;
    }

    public void setTextSize(float size){
        textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP,size);
        if (autoHorizontalScrollDirectionEnum == AutoHorizontalScrollDirectionEnum.Left){
            textViewTwo.setTextSize(TypedValue.COMPLEX_UNIT_DIP,size);
        }
    }

    public void setTextColor(int color){
        textView.setTextColor(color);
        if (autoHorizontalScrollDirectionEnum == AutoHorizontalScrollDirectionEnum.Left){
            textViewTwo.setTextColor(color);
        }
    }

    public void setTextViewPadding(int left, int top, int right, int bottom) {
        textView.setPadding(left,top,right,bottom);
        textViewTwo.setPadding(0,top,right,bottom);
    }

    public void setScrollDirectionLeftText(CharSequence text){
        this.autoHorizontalScrollDirectionEnum = AutoHorizontalScrollDirectionEnum.Left;
        textViewTwo.setVisibility(View.VISIBLE);
        commonSetText(text);
    }

    public void setScrollDirectionRight_LeftText(CharSequence text){
        this.autoHorizontalScrollDirectionEnum = AutoHorizontalScrollDirectionEnum.Left_Right;
        textViewTwo.setVisibility(View.GONE);
        commonSetText(text);
    }

    private void commonSetText(CharSequence text){
        this.text = text;
        textView.setText(text);
        textViewTwo.setText(text);
        scrollView.scrollTo(0,0);
        handler.removeCallbacks(ScrollRunnable);
        handler.post(ScrollRunnable);
    }

    public enum AutoHorizontalScrollDirectionEnum {
        Left(0),//向左边滚动
        Left_Right(1);//右左滚动
        AutoHorizontalScrollDirectionEnum(int value)
        {
            this.value=value;
        }
        public int Value()
        {
            return value;
        }
        private int value;
    }

}

使用：

xml布局

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data class="ForecastBinding">

    </data>

    <LinearLayout
        android:id="@+id/activity_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        >

        <com.sun.framework.CustomizeVC.AutoHorizontalScrollTextView
            android:id="@+id/autoHorizontalScrollTextView"
            android:layout_width="200dp"
            android:layout_height="wrap_content">

        </com.sun.framework.CustomizeVC.AutoHorizontalScrollTextView>

        <com.sun.framework.CustomizeVC.AutoHorizontalScrollTextView
            android:id="@+id/autoHorizontalScrollTextView2"
            android:layout_width="200dp"
            android:layout_height="wrap_content">

        </com.sun.framework.CustomizeVC.AutoHorizontalScrollTextView>


    </LinearLayout>

</layout>

 ForecastBinding binding;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        binding = DataBindingUtil.inflate(inflater, R.layout.forecast_fra, container, false);

        binding.autoHorizontalScrollTextView.setScrollDirectionRight_LeftText("自动滑动TextView。。。。。。。。。。。。。。。。");
        binding.autoHorizontalScrollTextView2.setScrollDirectionLeftText("自动滑动TextView。。。。。。。。。。。。。。。。");

        return binding.getRoot();
    }

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