andorid封装自动滚动TextView，没有焦点，有两种滚动方式

偏执的太偏执、 2022-06-10 14:14 209阅读 0赞

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][Link 1]

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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[Link 1]: http://blog.csdn.net/dashenid/article/details/77453012