Android recyclerview实现纵向虚线时间轴的示例代码
效果图
代码
package com.jh.timelinedemo; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.DashPathEffect; import android.graphics.Paint; import android.util.AttributeSet; import android.view.View; /** * @Description: Android自定义虚线 * @Date 2019-07-20 10:07 * @Version */ public class DividerView extends View { static public int ORIENTATION_HORIZONTAL = 0; static public int ORIENTATION_VERTICAL = 1; private Paint mPaint; private int orientation; public DividerView(Context context) { this(context, null); } public DividerView(Context context, AttributeSet attrs) { super(context, attrs); int dashGap, dashLength, dashThickness; int color; TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.DividerView, 0, 0); try { dashGap = a.getDimensionPixelSize(R.styleable.DividerView_dashGap, 5); dashLength = a.getDimensionPixelSize(R.styleable.DividerView_dashLength, 5); dashThickness = a.getDimensionPixelSize(R.styleable.DividerView_dashThickness, 3); color = a.getColor(R.styleable.DividerView_divider_line_color, 0xff000000); orientation = a.getInt(R.styleable.DividerView_divider_orientation, ORIENTATION_HORIZONTAL); } finally { a.recycle(); } mPaint = new Paint(); mPaint.setAntiAlias(true); mPaint.setColor(color); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeWidth(dashThickness); mPaint.setPathEffect(new DashPathEffect(new float[]{dashGap, dashLength,}, 0)); } public void setBgColor(int color) { mPaint.setColor(color); invalidate(); } @Override protected void onDraw(Canvas canvas) { if (orientation == ORIENTATION_HORIZONTAL) { float center = getHeight() * 0.5f; canvas.drawLine(0, center, getWidth(), center, mPaint); } else { float center = getWidth() * 0.5f; canvas.drawLine(center, 0, center, getHeight(), mPaint); } } }
package com.jh.timelinedemo; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import android.os.Bundle; import android.view.View; public class MainActivity extends AppCompatActivity { private RecyclerView rcy; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); rcy = findViewById(R.id.rcy); LinearLayoutManager manager = new LinearLayoutManager(this, RecyclerView.VERTICAL, false); rcy.setLayoutManager(manager); TimeLineAdapter adapter = new TimeLineAdapter(this); rcy.setAdapter(adapter); } }
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity"> <androidx.recyclerview.widget.RecyclerView android:id="@+id/rcy" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginTop="20dp" /> </LinearLayout>
package com.jh.timelinedemo; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import androidx.annotation.NonNull; import androidx.recyclerview.widget.RecyclerView; /** * * @date:on 2021/7/21 17:38 */ public class TimeLineAdapter extends RecyclerView.Adapter<TimeLineAdapter.ViewHolder> { private Context context; public TimeLineAdapter(Context context) { this.context = context; } @NonNull @Override public TimeLineAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View inflate = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, null); ViewHolder viewHolder = new ViewHolder(inflate); return viewHolder; } @Override public void onBindViewHolder(@NonNull TimeLineAdapter.ViewHolder holder, int position) { holder.line_up.setVisibility(position == 0 ? View.INVISIBLE : View.VISIBLE);//第一条数据隐藏头部线 holder.line_down.setVisibility(position == 4 ? View.INVISIBLE : View.VISIBLE);//最后一条数据隐藏底部线 } @Override public int getItemCount() { return 5; } class ViewHolder extends RecyclerView.ViewHolder { private final DividerView line_up, line_down; public ViewHolder(@NonNull View itemView) { super(itemView); line_up = itemView.findViewById(R.id.line_up); line_down = itemView.findViewById(R.id.line_down); } } }
<?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="wrap_content" xmlns:custom="http://schemas.android.com/apk/res-auto" android:orientation="horizontal" android:id="@+id/rl_history_root"> <LinearLayout android:layout_width="10dp" android:layout_height="match_parent" android:gravity="center_horizontal" android:layout_marginLeft="12dp" android:orientation="vertical"> <com.jh.timelinedemo.DividerView android:id="@+id/line_up" android:layout_width="1dp" android:layout_height="7dp" android:layerType="software" custom:dashGap="2dp" custom:dashLength="2dp" custom:dashThickness="1dp" custom:divider_line_color="#A3A9BD" custom:divider_orientation="vertical" /> <ImageView android:layout_width="10dp" android:layout_height="10dp" android:id="@+id/iv_history_rhombus" android:src="@mipmap/ic_rhombus_green" /> <com.jh.timelinedemo.DividerView android:id="@+id/line_down" android:layout_width="1dp" android:layout_height="match_parent" android:layerType="software" custom:dashGap="2dp" custom:dashLength="2dp" custom:dashThickness="1dp" custom:divider_line_color="#A3A9BD" custom:divider_orientation="vertical" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginLeft="19dp" android:orientation="vertical" android:paddingBottom="30dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:text="标题 标题 标题" android:textColor="#2f3856" android:textSize="14sp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginTop="6dp" android:text="内容 内容 " android:textColor="#2f3856" android:textSize="14sp" /> </LinearLayout> </LinearLayout>
<!-- 垂直方向的虚线 --> <declare-styleable name="DividerView"> <!-- 虚线颜色 --> <attr name="divider_line_color" format="color"/> <!-- 虚线宽度 --> <attr name="dashThickness" format="dimension"/> <!-- 虚线dash宽度 --> <attr name="dashLength" format="dimension"/> <!-- 虚线dash间隔 --> <attr name="dashGap" format="dimension"/> <!-- 虚线朝向 --> <attr name="divider_orientation" format="enum"> <enum name="horizontal" value="0"/> <enum name="vertical" value="1"/> </attr> </declare-styleable>
到此这篇关于Android recyclerview实现纵向虚线时间轴的示例代码的文章就介绍到这了,更多相关Android recyclerview纵向虚线时间轴内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!
赞 (0)