Inside Scrollview SignatureView無法正常工作

我把Signatureview放在Android Scrollview的內部。Inside Scrollview SignatureView無法正常工作
雖然在SignatureView上寫了一些東西，上下滾動，我無法寫我的標誌。

如何禁用Scrollview時SignatureView被觸摸

Sign.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>

Main.java

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 ""; 

    } 
}

來源

2016-08-24 Kumar

signatureview是在Linearlayout裏面不是滾動視圖？ –

scrollview在哪裏？我無法在Sign.xml中看到滾動視圖 – ViramP

@ViramP查看我更新的問題 – Kumar

您必須在此SignatureView中攔截觸摸事件。最好的辦法是它的子類，並覆蓋的onTouchEvent：

public class MySignatureView extends SignatureView { 
    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     // intercept touch event here, so it's not passed to ScrollView 
     super.onTouchEvent(event); 
     return false; 
    } 
}

然後，當然改變SignatureView來MySignatureView在佈局。

<com.your.package.name.MySignatureView 
     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"/>

來源

2016-08-24 13:40:08 pawelo

我必須保持那個類Mysignatureview？ – Kumar

無論你想要什麼。你可以使用匿名類，內部類或完全獨立的類來做到這一點。 – pawelo

你可以讓我知道，在我的代碼中，我必須修改你的建議，否則在滾動視圖內添加Signature捕獲的完整代碼 – Kumar

當您想簽名時，您需要在簽名被觸摸時攔截滾動事件。並且當你在簽名區域之外回到正常狀態時：scrollView攔截滾動事件。裏面的onCreate在控制器中添加以下內容：

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; 
      } 
     } 
    });

建議：如果你想達到你的代碼的一個更好的可讀性不使用像scrollView1使用有意義的名稱變量。

來源

2017-08-09 15:55:49

Inside Scrollview SignatureView無法正常工作

回答

相關問題