Android textview-可以为每个字母加上边框（例如表格边框）

Question

I want to know if its possible to design my textview in a way where 8000 LP would look like [8|0|0|0] LP (with the top and bottom border as well). I tried looking it up but all I could find is how people want an outline/shadow border on text. I dont want to create a table in my layout if thats possible, but if its required please give an example, tailored to my code format.

Heres an example of what i mean... it has each number seperated by that square border.

Heres my xml(shortened for relevant info only).

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/default_background_obelisk"
    android:scaleType="centerCrop"
    android:padding="16dp">
<TextView
        android:id="@+id/playerTwo_LP"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:gravity="center"
        android:textSize="40dp"
        android:textColor="#ffffff"
        android:text="8000 LP"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:rotation="180"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toRightOf="@+id/playerTwo_addLP"
        app:layout_constraintRight_toLeftOf="@+id/playerTwo_loseLP"
        app:layout_constraintBottom_toBottomOf="@+id/playerTwo_toolKit"
        android:textIsSelectable="true"/>

*    *    *

<TextView
        android:id="@+id/playerOne_LP"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:gravity="center"
        android:text="8000 LP"
        android:textAppearance="?android:attr/textAppearanceLarge"
        app:layout_constraintTop_toTopOf="@+id/playerOne_toolKit"
        app:layout_constraintLeft_toRightOf="@+id/playerOne_toolKit"
        app:layout_constraintRight_toLeftOf="@+id/playerOne_CardLibrary"
        app:layout_constraintBottom_toBottomOf="parent"/>

Current Layout

Answer 1

The code provided will lead to a view as shown in the picture. If it is what you want you can follow along or you can customize it to what you want!

First you need to make a bordering xml drawable . This will be used as a background to each part of your text. And around each letter or number in your text. Make a resource file inside drawable folder lets call it border.xml (full name res/drawable/border.xml ).Copy and paste this inside it:

    <?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android" 
      android:shape="rectangle" >
        <solid android:color="#00ffffff" />
        <stroke android:width="1dip" android:color="#4fa5d5"/>
        <padding android:left="4dp" android:right="4dp" 
                android:bottom="1dp" android:top="1dp"/>                   
    </shape>

This will bring a bordering effect on your text, You can also edit color and padding to fit your needs. The we need to create a layout with TextView as the root view. So in your layout folder make a file lets call it border_text_view.xml (full name res/layout/border_text_view.xml ). Copy and Paste the code below in it:

    <?xml version="1.0" encoding="utf-8"?>
    <TextView xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/border"/>

Note: The background is set to the previous declared border.xml from the drawable folder.

Then in your layout where you plan to display the bordering text lets say its activity_main (it can be any layout you want to display the view).

Add this to that layout:

    .......
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:id="@+id/layout_border"/>
    .......

Then in your layout's Java Class(Activity or Fragment) get a reference to the Linear layout added above and call the method as follows:

    LinearLayout linearLayout=(LinearLayout)findViewById(R.id.layout_border);  
    addBorderedView(this, linearLayout, "8000LP"); 

Now make the method addBorderedView as follows:

    private void addBorderedView(Context context, LinearLayout layout, String string_to_display) {
    String[] array = string_to_display.split("");
    for (int i = 1; i < array.length; i++) {
        TextView borderedTextView = (TextView) LayoutInflater.from(context).inflate(R.layout.border_text_view, null);
        borderedTextView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
        borderedTextView.setGravity(Gravity.CENTER);
        borderedTextView.setText(array[i]);
        LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) borderedTextView.getLayoutParams();
        params.setMargins(2, 0, 2, 0); //substitute parameters for left, top, right, bottom
        borderedTextView.setLayoutParams(params);
        layout.addView(borderedTextView);
    }
}

To improve performance you may need to make a view holder if you plan to display large sentences this way, if you are not then you are good to go!