android - 内部Scrollview SignatureView无法正常工作

我把Signatureview放在androidScrollview里。
但是当我在SignatureView上写东西时，上下滚动我就不能写我的标志了。
如何在触摸Scrollview时禁用SignatureView。
Link to referred signature
符号XML

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        >

<ScrollView
            android:id="@+id/scrollView1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:isScrollContainer="false"
            android:paddingBottom="30dp"
            android:paddingLeft="2dp"
            android:paddingRight="2dp"
            android:scrollbars="none">

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:orientation="vertical">


        <com.kyanogen.signatureview.SignatureView
            xmlns:sign="http://schemas.android.com/apk/res-auto"
            android:id="@+id/signature_view"
            android:layout_width="match_parent"
            android:layout_height="100dp"
            android:minHeight="250dp"
            android:layout_weight="1"
            sign:penSize="5dp"
            sign:backgroundColor="#ffffff"
            sign:penColor="#000000"
            sign:enableSignature="true"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:weightSum="2">
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/clearSignButton"
            android:layout_weight="1"
            android:text="clear"/>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/saveSignButton"
            android:layout_weight="1"
            android:text="save"/>
    </LinearLayout>
    </LinearLayout>
 </LinearLayout>
</Scrolview>

主类

package com.example.parsaniahardik.signaturedemo;

import android.graphics.Bitmap;
import android.media.MediaScannerConnection;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.kyanogen.signatureview.SignatureView;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

    Bitmap bitmap;
    Button clear,save;
    SignatureView signatureView;
    String path;
    private static final String IMAGE_DIRECTORY = "/signdemo";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        signatureView =  (SignatureView) findViewById(R.id.signature_view);
        clear = (Button) findViewById(R.id.clear);
        save = (Button) findViewById(R.id.save);

        clear.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                signatureView.clearCanvas();
            }
        });

        save.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bitmap = signatureView.getSignatureBitmap();
                path = saveImage(bitmap);
            }
        });


    }
    public String saveImage(Bitmap myBitmap) {
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        myBitmap.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
        File wallpaperDirectory = new File(
                Environment.getExternalStorageDirectory() + IMAGE_DIRECTORY /*iDyme folder*/);
        // have the object build the directory structure, if needed.
        if (!wallpaperDirectory.exists()) {
            wallpaperDirectory.mkdirs();
            Log.d("hhhhh",wallpaperDirectory.toString());
        }

        try {
            File f = new File(wallpaperDirectory, Calendar.getInstance()
                    .getTimeInMillis() + ".jpg");
            f.createNewFile();
            FileOutputStream fo = new FileOutputStream(f);
            fo.write(bytes.toByteArray());
            MediaScannerConnection.scanFile(MainActivity.this,
                    new String[]{f.getPath()},
                    new String[]{"image/jpeg"}, null);
            fo.close();
            Log.d("TAG", "File Saved::--->" + f.getAbsolutePath());

            return f.getAbsolutePath();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        return "";

    }
}

最佳答案

当你想签名时，你需要在触摸签名时截取滚动事件。当您在签名区域之外时，返回正常状态：scrollview截取scroll事件。
在控制器的oncreate中添加以下内容：

signatureView.setOnTouchListener(new View.OnTouchListener(){
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            int action = motionEvent.getAction();
            switch (action){
                case MotionEvent.ACTION_DOWN:
                    // Disable the scroll view to intercept the touch event
                    scrollView1.requestDisallowInterceptTouchEvent(true);
                    return false;
                case MotionEvent.ACTION_UP:
                    // Allow scroll View to interceot the touch event
                    scrollView1.requestDisallowInterceptTouchEvent(false);
                    return true;
                case MotionEvent.ACTION_MOVE:
                    scrollView1.requestDisallowInterceptTouchEvent(true);
                    return false;
                default:
                    return true;
            }
        }
    });

关于android - 内部Scrollview SignatureView无法正常工作，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39124822/