效果圖

代碼

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自定義虛線 * @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.RecyclerViewandroid: 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);//第一條數據隱藏頭部線holder.line_down.setVisibility(position == 4 ? View.INVISIBLE : View.VISIBLE);//最后一條數據隱藏底部線 } @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'> <LinearLayoutandroid:layout_width='10dp'android:layout_height='match_parent'android:gravity='center_horizontal'android:layout_marginLeft='12dp'android:orientation='vertical'> <com.jh.timelinedemo.DividerView android: 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: android:src='http://www.lshqa.cn/bcjs/@mipmap/ic_rhombus_green' /> <com.jh.timelinedemo.DividerView android: 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> <LinearLayoutandroid: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='標題 標題 標題' 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='內容 內容 ' android:textColor='#2f3856' android:textSize='14sp' /> </LinearLayout></LinearLayout>

<!-- 垂直方向的虛線 --> <declare-styleable name='DividerView'><!-- 虛線顏色 --><attr name='divider_line_color' format='color'/><!-- 虛線寬度 --><attr name='dashThickness' format='dimension'/><!-- 虛線dash寬度 --><attr name='dashLength' format='dimension'/><!-- 虛線dash間隔 --><attr name='dashGap' format='dimension'/><!-- 虛線朝向 --><attr name='divider_orientation' format='enum'> <enum name='horizontal' value='0'/> <enum name='vertical' value='1'/></attr> </declare-styleable>

到此這篇關于Android recyclerview實現縱向虛線時間軸的示例代碼的文章就介紹到這了,更多相關Android recyclerview縱向虛線時間軸內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！