एंड्रॉइड: बिटमैप गतिशील या ओवरले बटन पर बटन कैसे बनाएं?

Question

मैं दृश्य पर बिटमैप या ओवरलेइंग बटन पर एक बटन बनाने की कोशिश कर रहा हूं। मैं यहां डिजिटल हस्ताक्षर बना रहा हूं। हस्ताक्षर के बाद मुझे इसके लिए सहेजने की ज़रूरत है मुझे एक बटन चाहिए। कृपया कोई मेरी मदद करें। अति तत्काल। तुम मेरे कोड

import android.content.Context; 
import android.content.Intent; 
import android.graphics.Bitmap; 
import android.graphics.Bitmap.Config; 
import android.graphics.BitmapFactory; 
import android.graphics.BlurMaskFilter; 
import android.graphics.BlurMaskFilter.Blur; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.Path; 
import android.graphics.PorterDuff.Mode; 
import android.graphics.PorterDuffXfermode; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.MenuItem; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup.LayoutParams; 
import android.widget.Button; 
import android.widget.TextView; 

public class FingerPaint extends GraphicsActivity 
    implements OnClickListener { 
private TextView pauseButton; 

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(new MyView(this)); 

    Capture_SignatureActivity.writeLog("In FingerPaint class"); 
    mPaint = new Paint(); 
    mPaint.setAntiAlias(true); 
    mPaint.setDither(true); 
    mPaint.setColor(0xFF003F87); 
    mPaint.setStyle(Paint.Style.STROKE); 
    mPaint.setStrokeJoin(Paint.Join.ROUND); 
    mPaint.setStrokeCap(Paint.Cap.ROUND); 
    mPaint.setStrokeWidth(1); 

} 
private Paint mPaint; 

public void colorChanged(int color) { 
    Capture_SignatureActivity.writeLog("In color changed"); 
    mPaint.setColor(color); 
} 

public class MyView extends View{ 
    private static final float MINP = 0.25f; 
    private static final float MAXP = 0.75f; 

    private Bitmap mBitmap; 
    private Canvas mCanvas; 
    private Path mPath; 
    private Paint mBitmapPaint; 
    private Bitmap overlayDefault; 
    private Bitmap overlay; 
    private Canvas c2; 
    private Paint pTouch; 
    private float X = -100; 
    private float Y = -100; 



    public MyView(Context c) { 
     super(c); 
     Capture_SignatureActivity.writeLog("In MyVIEW"); 
     mPath = new Path(); 
     mBitmapPaint = new Paint(Paint.DITHER_FLAG); 


     mBitmap =  BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher); 
     overlayDefault = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher); 
     overlay = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher).copy(Config.ARGB_8888, true); 
     c2 = new Canvas(overlay);   



     pTouch = new Paint(Paint.ANTI_ALIAS_FLAG);   
     pTouch.setXfermode(new PorterDuffXfermode(Mode.SRC_OUT)); 
     pTouch.setColor(Color.TRANSPARENT); 
     pTouch.setMaskFilter(new BlurMaskFilter(15, Blur.NORMAL)); 
     pTouch.setMaskFilter(startActivity(FingerPaint.this, Capture_SignatureActivity.class)); 



    } 

    @Override 
    protected void onSizeChanged(int w, int h, int oldw, int oldh) { 
     super.onSizeChanged(w, h, oldw, oldh); 
     System.out.println("w-->"+w+"-->"+"h--"+h+"-->"+"oldw-->"+oldh+"oldw-->"+oldw); 
     Capture_SignatureActivity.writeLog("In onSizeChanged"); 
     mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);    
     mCanvas = new Canvas(mBitmap);  
    } 

    @Override 
    protected void onDraw(Canvas canvas) { 
     Capture_SignatureActivity.writeLog("In onDraw"); 
     canvas.drawColor(0xFFFFFFFF);  

     canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint); 
     canvas.drawPath(mPath, mPaint); 

     c2.drawBitmap(overlayDefault, 0, 0, null); //exclude this line to show all as you draw 
     c2.drawCircle(X , Y , 80, pTouch); 
     //draw the overlay over the background 
     canvas.drawBitmap(overlay, 0, 0, null); 

    } 

    private float mX, mY; 
    private static final float TOUCH_TOLERANCE = 4; 

    private void touch_start(float x, float y) { 
     Capture_SignatureActivity.writeLog("In touch_start"); 
     mPath.reset(); 
     mPath.moveTo(x, y); 
     mX = x; 
     mY = y; 
     System.out.println("---- " +mX); 
    } 
    private void touch_move(float x, float y) { 
     Capture_SignatureActivity.writeLog("In touch_Move"); 
     float dx = Math.abs(x - mX); 
     float dy = Math.abs(y - mY); 
     if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) { 
      mPath.quadTo(mX, mY, (x + mX)/2, (y + mY)/2); 
      mX = x; 
      mY = y; 
     } 
    } 
    private void touch_up() { 
     Capture_SignatureActivity.writeLog("In touch_up"); 
     mPath.lineTo(mX, mY); 
     // commit the path to our offscreen 
     mCanvas.drawPath(mPath, mPaint); 
     // kill this so we don't double draw 
     mPath.reset(); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     Capture_SignatureActivity.writeLog("In touch_event"); 
     float x = event.getX(); 
     float y = event.getY(); 

     switch (event.getAction()) { 
     case MotionEvent.ACTION_DOWN: 
      touch_start(x, y); 
      invalidate(); 
      break; 
     case MotionEvent.ACTION_MOVE: 
      touch_move(x, y); 
      invalidate(); 
      break; 
     case MotionEvent.ACTION_UP: 
      touch_up(); 
      invalidate(); 
      break; 

     } 
     return true; 
    } 

    public void onClick(View v) { 
     //In myView 

     startActivity(new Intent(FingerPaint.this, Capture_SignatureActivity.class)); 


    } 
} 

public void onClick(View v) { 
    //onCreate 

} 

@Override 
public boolean onCreateOptionsMenu(android.view.Menu menu) 
{ 
    super.onCreateOptionsMenu(menu); 

    menu.add(0, 1, 0 , "Clear Screen"); 
    menu.add(0, 2, 0 , "Exit Screen"); 

    return true; 
} 

@Override 
public boolean onMenuItemSelected(int featureId, MenuItem item) 
{ 
    switch(item.getItemId()) 
    { 
    case 1: 
     startActivity(new Intent(this, FingerPaint.class)); 
     break; 
    case 2: 
     startActivity(new Intent(this, Capture_SignatureActivity.class)); 
     break; 

    } 
    return super.onMenuItemSelected(featureId, item); 
} 


} 

मैं छवि & बनाने के लिए नहीं कर सकते गतिविधि शुरू कर रहा हूँ धन्यवाद

यहाँ। कृपया मुझे बताएं कि इस मुद्दे को कैसे हल किया जाए।

Answer 1

यहाँ मैं गतिशील रूप से बिटमैप & कैनवास

public class MainAct extends GrapActivity implements OnClickListener { 


private Button saveButton; 
private Button clearButton; 

// onCreate Activity 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);   

    // content view 
    signature = new MyView(this); 

    // Dynamically created button on bitmap & canvas 

    RelativeLayout myLayout = new RelativeLayout(this);   
    myLayout.setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); 

    // For Save Button 
    saveButton = new Button(this); 
    saveButton.setText("Save"); 
    saveButton.setOnClickListener(this); 

    // For Clear Button 
    clearButton = new Button(this); 
    clearButton.setText("Clear"); 
    clearButton.setOnClickListener(this); 

    myLayout.addView(signature); 
    myLayout.addView(saveButton); 
    myLayout.addView(clearButton); 

    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(100, LayoutParams.WRAP_CONTENT); 
    //Alignments 
    params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
    params.addRule(RelativeLayout.ALIGN_PARENT_LEFT); 
    saveButton.setLayoutParams(params); 

    //Alignments 
    RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(100, LayoutParams.WRAP_CONTENT); 
    params2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); 
    params2.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
    clearButton.setLayoutParams(params2); 

    saveButton.bringToFront(); 
    clearButton.bringToFront(); 
    this.setContentView(myLayout); 
    new Thread(new RefreshRunner()).start(); 

    // onclick listner for CLEAR button 
    clearButton.setOnClickListener(new OnClickListener() {   
     public void onClick(View v) { 
      //Activity for Clearing the Screen 
      startActivity(new Intent(ThisAct.this, ThisAct.class)); 
      finish(); 
     } 
    }); 

// onclick listner for SAVE button 
     saveButton.setOnClickListener(new OnClickListener() { 
      public void onClick(View v) { 
       //capture the image 
       try {      
        saveAsJpg(mBitmap);  
        startActivity(new Intent(ThisAct.this, MainActivity.class)); 
        finish(); 
       } catch (IOException e) {     
        e.printStackTrace(); 
       } 
      } 
     });  
} 

} 

मदद के लिए धन्यवाद लोग पर बटन बनाने के लिए जिस तरह से ..

Answer 2

यदि आप ImageView और ButtonRelativeLayout के अंदर रखते हैं तो वे एक-दूसरे को ओवरलैप करेंगे। आप आवश्यकतानुसार स्थिति के साथ खेल सकते हैं।

<RelativeLayout 
android:layout_width="wrap_content" 
android:layout_height="match_parent" > 

<ImageView 
android:.... 
android:.... 
/> 
<Button 
android:.... 
android:.... 
/> 
</RelativeLayout>