Question

是否可以在Android中将所选的EditText样式设置为删除线。有人可以给我看一些示例代码吗？

Answer 1

如何在Android

中以编程方式删除TextView文本

<强> activity_main.xml中

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    tools:context=".MainActivity"
    android:background="@android:color/white"

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Sample TextView...\nSecond line of TextView"
        android:padding="15dp"
        android:textSize="25dp"
        android:textColor="#ff9c308c"
        />
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Set Text Strike Through"
        android:layout_below="@id/tv"
        />
</RelativeLayout>

<强> MainActivity.java

package com.cfsuman.me.androidcodesnippets;

import android.graphics.Paint;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MainActivity extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Get the widgets reference from XML layout
        RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);
        final TextView tv = (TextView) findViewById(R.id.tv);
        Button btn = (Button) findViewById(R.id.btn);

        // Set a click listener for Button widget
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                /*
                    public int getPaintFlags ()
                        Returns
                    the flags on the Paint being used to display the text.

                    setPaintFlags(int flags)
                        Sets flags on the Paint being used to display the text and
                        reflows the text if they are different from the old flags.

                    STRIKE_THRU_TEXT_FLAG
                     Paint flag that applies a strike-through decoration to drawn text.
                 */

                // Set TextView text strike through
                tv.setPaintFlags(tv.getPaintFlags()|     Paint.STRIKE_THRU_TEXT_FLAG);
            }
        });
    }
}

来自：https://android--code.blogspot.com/2015/05/android-textview-strikethrough.html

Answer 2

试试这个

public class MainActivity extends AppCompatActivity {




    EditText editText;

    @SuppressLint("ClickableViewAccessibility")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = findViewById(R.id.search_edit_frame);

        editText.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (MotionEvent.ACTION_UP == event.getAction()) {

                    if (editText.hasSelection()) {
                        if(!TextUtils.isEmpty(editText.getText().toString())){
                            final int selStart = editText.getSelectionStart();
                            final int selEnd = editText.getSelectionEnd();
                            SpannableString spannableString = new SpannableString(editText.getText().toString());
                            spannableString.setSpan(new StrikethroughSpan(), selStart, selEnd, 0);

                            editText.setText(spannableString);
                            return false;
                        }

                    }


                }
                return false;
            }
        });


    }


}

<强>布局

<?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:background="@drawable/rotate">

    <EditText
        android:id="@+id/search_edit_frame"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_marginTop="10dp"
        android:text="Nilesh Rathod"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:textColor="@color/colorPrimaryDark" />

</LinearLayout>

删除线在EditText中选择了文本

2 个答案:

如何在Android