new選択可能なTextView in android 3（API <= 11）コンポーネント

Question

時間のかかる検索の後、アンドロイドAPIレベル< = 11のテキストビューでテキストを選択できるコンポーネントが見つかりません。誰もがこのコンポーネントをアップグレードすることはでき

 SelectableTextView textView1 = new SelectableTextView(context); 
    textView1.setClickable(false); 
    textView1.setCursorVisible(false); 
    textView1.setOnTouchListener(getOnTextTouch());//new after text select touch 
    textView1.setEnabled(this.selectable); 
    textView1.setTextIsSelectable(this.selectable); 

：選択したこれらの属性を設定し、このコンポーネントを使用するためのユーザに触れたテキストのオフセットを取得

public class SelectableTextView extends TextView { 

public static int _SelectedBackgroundColor = 0xffA6D4E1; 
public static int _SelectedTextColor = 0xff000000; 
private OnTouchListener lastOnTouch; 
protected int textOffsetStart; 
protected int textOffsetEnd; 
private OnLongClickListener lastOnLongClick; 
protected boolean longCliked; 
protected boolean isDowned; 
protected int textSelectedEnd; 
protected int textSelectedStart; 
private static SelectableTextView lastInstance; 

public SelectableTextView(Context context) { 
    super(context); 
} 

public void setTextIsSelectable(boolean selectable) { 
    // TODO:ANDROID3 
    // if:androidversion>=3 
    // super.setTextIsSelectable(selectable); 
    // else 
    super.setLongClickable(true); 
    super.setOnLongClickListener(getSelectableLongClick()); 
    super.setOnTouchListener(getSelectableOnTouch()); 
} 

private OnLongClickListener getSelectableLongClick() { 
    return new OnLongClickListener() { 

     @Override 
     public boolean onLongClick(View v) { 
      longCliked = true; 
      if (lastOnLongClick != null) { 
       lastOnLongClick.onLongClick(v); 
      } 
      return true; 
     } 
    }; 
} 

@Override 
public void setOnTouchListener(OnTouchListener l) { 
    super.setOnTouchListener(l); 
    this.lastOnTouch = l; 
} 

@Override 
public void setOnLongClickListener(OnLongClickListener l) { 
    super.setOnLongClickListener(l); 
    this.lastOnLongClick = l; 
} 

private OnTouchListener getSelectableOnTouch() { 
    return new OnTouchListener() { 
     @Override 
     public boolean onTouch(View v, MotionEvent event) { 
      int action = event.getAction(); 

      if (action == MotionEvent.ACTION_DOWN) { 
       if (lastInstance == null) 
        lastInstance = SelectableTextView.this; 
       if (lastInstance != null && lastInstance != SelectableTextView.this) { 
        lastInstance.clean(); 
        lastInstance = SelectableTextView.this; 
       } 

       int offset = getOffset(event); 
       if ((offset < textOffsetEnd && offset > textOffsetStart) 
         || (offset > textOffsetEnd && offset < textOffsetStart)) { 
        if (textOffsetEnd - offset > offset - textOffsetStart) 
         textOffsetStart = textOffsetEnd; 
       } else { 
        clean(); 
        textOffsetStart = offset; 
       } 
       isDowned = true; 
      } else if (isDowned && longCliked && action == MotionEvent.ACTION_MOVE) { 
       selectTextOnMove(event); 
      } else if (action == MotionEvent.ACTION_UP) { 
       isDowned = false; 
       longCliked = false; 
      } 
      if (lastOnTouch != null) 
       lastOnTouch.onTouch(v, event); 
      return false; 
     } 

    }; 
} 

private void selectTextOnMove(MotionEvent event) { 
    int offset = getOffset(event); 
    if (offset != Integer.MIN_VALUE) { 
     String text = getText().toString(); 
     SpannableStringBuilder sb = new SpannableStringBuilder(text); 
     BackgroundColorSpan bgc = new BackgroundColorSpan(_SelectedBackgroundColor); 
     ForegroundColorSpan textColor = new ForegroundColorSpan(_SelectedTextColor); 

     int start = textOffsetStart; 
     textOffsetEnd = offset; 
     int end = offset; 
     if (start > end) { 
      int temp = start; 
      start = end; 
      end = temp; 
     } 
     int[] curectStartEnd = curectStartEnd(text, start, end); 
     start = curectStartEnd[0]; 
     end = curectStartEnd[1]; 
     SelectableTextView.this.textSelectedStart = start; 
     SelectableTextView.this.textSelectedEnd = end; 
     sb.setSpan(bgc, start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
     sb.setSpan(textColor, start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 

     setText(sb); 
    } 
} 

private int[] curectStartEnd(String text, int start, int end) { 
    int length = text.length(); 

    while (start < length && start > 0 && text.charAt(start) != ' ') { 
     start--; 
    } 
    while (end < length && text.charAt(end) != ' ') { 
     end++; 
    } 
    return new int[] { start, end }; 
} 

private int getOffset(MotionEvent event) { 
    Layout layout = getLayout(); 
    if (layout == null) 
     return Integer.MIN_VALUE; 
    float x = event.getX() + getScrollX(); 
    float y = event.getY() + getScrollY(); 
    int line = layout.getLineForVertical((int) y); 
    int offset = layout.getOffsetForHorizontal(line, x); 
    return offset; 
} 

protected void clean() { 
    if (this.getText() != null) { 
     this.setText(this.getText().toString()); 
     textSelectedStart = 0; 
     textSelectedEnd = 0; 
    } 
} 

@Override 
public int getSelectionStart() { 
    return textSelectedStart; 
} 

@Override 
public int getSelectionEnd() { 
    return textSelectedEnd; 
} 

} 

getOffset：私はあなたに助けになることがあり、このコンポーネントを書かれています？なし

@SuppressLint("NewApi") 
public void setTextIsSelectable(boolean selectable) { 
    if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.HONEYCOMB) 
     super.setTextIsSelectable(true); 
    else 
    { 
     super.setLongClickable(true); 
     super.setOnLongClickListener(getSelectableLongClick()); 
     super.setOnTouchListener(getSelectableOnTouch()); 
    } 
} 

が、私はこのようにそれを使用し、：また

This is the code in git hub

Answer 1

ためthis

public SelectableTextView(Context context,AttributeSet attrs) 
{ 
    super(context,attrs); 
} 

public SelectableTextView(Context context,AttributeSet attrs,int defStyle) 
{ 
    super(context,attrs,defStyle); 
} 

次の2つのコンストラクタを追加しますが、私はまた、コードに以下を追加しましたOnTouchListener：

txt_copyFrom.setClickable(false); 
txt_copyFrom.setCursorVisible(false); 
txt_copyFrom.setEnabled(true); 
txt_copyFrom.setTextIsSelectable(true); 
txt_copyFrom.setOnLongClickListener(new OnLongClickListener(){ 

    @Override 
    public boolean onLongClick(View v) { 
     int start=txt_copyFrom.getSelectionStart(); 
     int end=txt_copyFrom.getSelectionEnd(); 

     mSelectedText=txt_copyFrom.getText().toString().substring(start, end); 
     Log.d(TAG, "Selected text: "+mSelectedText); 
     return true; 
    } 

}); 

私は活動自体でTextViewのため OnLongClickListener内 OnTouchListenerを設定する必要が推測

<com.example.clipboardtest.SelectableTextView 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:text="Old Buccaneer1The Old Sea-dog at the Admiral BenbowSquire Trelawney, Dr. Livesey, and the rest of these gentlemen having asked me to write down the whole particulars about Treasure Island, from the beginning to the end, keeping nothing back but the bearings of the island, and that only because there is still treasure not yet lifted, I take up my pen in the year of grace 17--and go back to the time when my father kept the Admiral Benbow inn and the brown old seaman with the sabre cut first took up his lodging under our roof." 
    android:id="@+id/txt_copyfrom" 
/>   

：XMLと

。すべてSelectableTextViewでの場所にログを入れてみました

、それが動作していないようです...私はLongClickListenerが呼ばれたが、TouchListenerがさえ

は内部でOnTouchListenerを設定し...と呼ばれていないことがわかりますOnLongClickListenerはthis

でした