Android实现多个连续带数字圆圈效果
有项目需求需要绘制多个圆圈,并且使用连续的数字对其排列起来,也就是好多排的圆圈。
首先看一下效果图:
一排设置为8个,一共有53个的:
一排设值为5个的,一共有153个:
可以根据总的个数和每排个数自动调节圆圈的大小,并且根据传入的监听事件作出不同的点击效果。
思路很简单,首先需要画一个圆出来:
<?xml version="1.0" encoding="UTF-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval" android:useLevel="false" > <padding android:left="1dp" android:top="1dp" android:right="1dp" android:bottom="1dp" /> <stroke android:width="1dp" android:color="@android:color/black" /> <size android:width="10dp" android:height="10dp" /> </shape>
然后创建TextView,设置TextView的背景为这个drawable即可。
可以根据屏幕的总宽度和每排需要放置的圆个数,计算出每一个圆的合适大小,然后设置每个圆之间的margin为这个圆的十分之一,所以这个圆的最后大小应该为平均值的十分之八。
然后使用LinearLayout布局,动态加载多个TextView,每个TextView设置好对应的属性即可。
由于可能圆的个数过多,所以需要ScrollView来进行嵌套,从而支持滑动事件,需要注意的就是ScrollView下面只能有一个子节点。
完整代码:
import android.content.Context; import android.os.Build; import android.support.annotation.RequiresApi; import android.util.Log; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.LinearLayout; import android.widget.ScrollView; import android.widget.TextView; /** * Created by leafage on 2017/7/21. */ public class CircleView { private LinearLayout mMainLinearLayout; private ScrollView mScrollView; private LinearLayout mLinearLayout; private WindowManager mWindowManager; private Context mContext; //全屏参数 LinearLayout.LayoutParams MatchParams = new LinearLayout.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); //用来设置内部LinearLayout的参数,宽度适应父布局,高度自动 LinearLayout.LayoutParams LinearLayoutParams = new LinearLayout.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); //设置TextView的参数 LinearLayout.LayoutParams TextViewParams = new LinearLayout.LayoutParams( LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); public CircleView(Context context) { mContext = context; mMainLinearLayout = new LinearLayout(context); mLinearLayout = new LinearLayout(context); mScrollView = new ScrollView(context); //用来得到总屏幕的宽度 mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); init(); } private void init() { mLinearLayout.setOrientation(LinearLayout.VERTICAL); mMainLinearLayout.setLayoutParams(MatchParams);//最外面的全屏 mScrollView.setLayoutParams(MatchParams);//滚动的全屏 mLinearLayout.setLayoutParams(MatchParams);//内容的全屏 mLinearLayout.setOrientation(LinearLayout.VERTICAL);//垂直放置 } @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) public LinearLayout getLinearLayout(int column, int count, View.OnClickListener onClickListener) { int row = count / column;//计算出多少排 int duoyu = count - row * column;//计算出多余的个数 int totalWidth = mWindowManager.getDefaultDisplay().getWidth();//得到总的宽度 int width = totalWidth / column;//计算出每排的每个圆圈的平均宽度 int margin = (int) (width*0.1);//设置边距为0.1 width = (int) (width * 0.8);//去掉左右边距剩下的宽度 int num = 1;//从1开始计数 TextViewParams.setMargins(margin, margin, margin, margin); for (int i = 0 ; i < row; i++) {//一共绘制多少排 LinearLayout linearLayout = new LinearLayout(mContext); linearLayout.setLayoutParams(LinearLayoutParams); linearLayout.setOrientation(LinearLayout.HORIZONTAL); for (int j = 0; j < column; j++) {//一排绘制多少个 final TextView textView = new TextView(mContext); textView.setBackground(mContext.getResources().getDrawable(R.drawable.cricle)); textView.setHeight(width); textView.setWidth(width); textView.setGravity(Gravity.CENTER); textView.setText(String.valueOf(num)); textView.setLayoutParams(TextViewParams); textView.setOnClickListener(onClickListener);//设置监听事件 linearLayout.addView(textView); num++; } mLinearLayout.addView(linearLayout); } //绘制剩下多余的一排 LinearLayout linearLayout = new LinearLayout(mContext); linearLayout.setLayoutParams(LinearLayoutParams); linearLayout.setOrientation(LinearLayout.HORIZONTAL); for (int i = 0 ; i< duoyu;i++) { TextView textView = new TextView(mContext); textView.setBackground(mContext.getResources().getDrawable(R.drawable.cricle)); textView.setHeight(width); textView.setWidth(width); textView.setGravity(Gravity.CENTER); textView.setText(String.valueOf(num)); textView.setLayoutParams(TextViewParams); textView.setOnClickListener(onClickListener); linearLayout.addView(textView); num++; } mLinearLayout.addView(linearLayout); mScrollView.addView(mLinearLayout); mMainLinearLayout.addView(mScrollView); return mMainLinearLayout; } }
可以直接在Activity里面使用:
import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity{ private LinearLayout mMainLayout; @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); CircleView circle = new CircleView(this); mMainLayout = circle.getLinearLayout(8, 53, new View.OnClickListener() { @Override public void onClick(View view) { Toast.makeText(MainActivity.this, "ID:" + ((TextView)view).getText(), Toast.LENGTH_SHORT).show(); } }); setContentView(mMainLayout); } }
代码结构:
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