本文整理了Java中android.text.TextWatcher.beforeTextChanged()方法的一些代码示例，展示了TextWatcher.beforeTextChanged()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。TextWatcher.beforeTextChanged()方法的具体详情如下：
包路径：android.text.TextWatcher
类名称：TextWatcher
方法名：beforeTextChanged

TextWatcher.beforeTextChanged介绍

暂无

代码示例

代码示例来源：origin: facebook/litho

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 for (TextWatcher w : mTextWatchers) {
  w.beforeTextChanged(s, start, count, after);
 }
}

代码示例来源：origin: facebook/litho

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 if (mDelegates != null) {
  for (int i = 0, stop = mDelegates.size(); i < stop; i++) {
   mDelegates.get(i).beforeTextChanged(s, start, count, after);
  }
 }
 // Only need the previous line count when state update policy is ON_LINE_COUNT_CHANGE
 if (mStateUpdatePolicy == UPDATE_ON_LINE_COUNT_CHANGE) {
  mPrevLineCount = getLineCount();
 }
}

代码示例来源：origin: robolectric/robolectric

@Test
public void whenSettingText_ShouldFireBeforeTextChangedWithCorrectArguments() {
 textView.setText(INITIAL_TEXT);
 TextWatcher mockTextWatcher = mock(TextWatcher.class);
 textView.addTextChangedListener(mockTextWatcher);
 textView.setText(NEW_TEXT);
 verify(mockTextWatcher).beforeTextChanged(INITIAL_TEXT, 0, INITIAL_TEXT.length(), NEW_TEXT.length());
}

代码示例来源：origin: robolectric/robolectric

@Test
public void whenAppendingText_ShouldFireBeforeTextChangedWithCorrectArguments() {
 textView.setText(INITIAL_TEXT);
 TextWatcher mockTextWatcher = mock(TextWatcher.class);
 textView.addTextChangedListener(mockTextWatcher);
 textView.append(NEW_TEXT);
 verify(mockTextWatcher).beforeTextChanged(eq(INITIAL_TEXT), eq(0), eq(INITIAL_TEXT.length()), eq(INITIAL_TEXT.length()));
}

代码示例来源：origin: sharish/WhatsappFormatter

private static void sendBeforeTextChanged(TextWatcher[] mListeners, CharSequence s, int start, int count, int after) {
  if (mListeners != null) {
    for (int i = 0; i < mListeners.length; i++) {
      mListeners[i].beforeTextChanged(s, start, count, after);
    }
  }
}

代码示例来源：origin: hylinux1024/Componentization

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
  if (mTextWatcher != null) {
    mTextWatcher.beforeTextChanged(s, start, count, after);
  }
}

代码示例来源：origin: morogoku/MTweaks-KernelAdiutorMOD

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
  if (mTextWatcher != null) {
    mTextWatcher.beforeTextChanged(s, start, count, after);
  }
}

代码示例来源：origin: sunhapper/SpEditTool

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 ((TextWatcher) mObject).beforeTextChanged(s, start, count, after);
}

代码示例来源：origin: yydcdut/RxMarkdown

private void sendBeforeTextChanged(CharSequence s, int start, int before, int after) {
  if (mListeners != null) {
    final ArrayList<TextWatcher> list = mListeners;
    final int count = list.size();
    for (int i = 0; i < count; i++) {
      list.get(i).beforeTextChanged(s, start, before, after);
    }
  }
}

代码示例来源：origin: linkedin/Spyglass

/**
 * Notify external text watchers that the text is about to change.
 * See {@link TextWatcher#beforeTextChanged(CharSequence, int, int, int)}.
 */
private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
  final List<TextWatcher> list = mExternalTextWatchers;
  final int count = list.size();
  for (int i = 0; i < count; i++) {
    TextWatcher watcher = list.get(i);
    if (watcher != this) {
      watcher.beforeTextChanged(text, start, before, after);
    }
  }
}

代码示例来源：origin: com.github.japgolly.android.test/robolectric

private void sendBeforeTextChanged(CharSequence newValue) {
  for (TextWatcher watcher : watchers) {
    watcher.beforeTextChanged(this.text, 0, this.text.length(), newValue.length());
  }
}

代码示例来源：origin: sharish/WhatsappFormatter

/**
 * Send an before text change event to child listeners
 *
 * @see {@link TextWatcher#beforeTextChanged(CharSequence, int, int, int)}
 */
private void sendBeforeTextChanged(CharSequence s, int start, int count, int after) {
  if (mListeners != null) {
    for (int i = 0; i < mListeners.size(); i++) {
      mListeners.get(i).beforeTextChanged(s, start, count, after);
    }
  }
}

代码示例来源：origin: sharish/WhatsappFormatter

/**
 * Send an before text change event to child listeners
 * @see {@link TextWatcher#beforeTextChanged(CharSequence, int, int, int)}
 */
private void sendBeforeTextChanged(CharSequence s, int start, int count, int after) {
  if (mListeners != null) {
    for (int i = 0; i < mListeners.size(); i++) {
      mListeners.get(i).beforeTextChanged(s, start, count, after);
    }
  }
}

代码示例来源：origin: dkzwm/FormatEditText

private void sendBeforeTextChanged(CharSequence s, int start, int count, int after) {
  if (mWatchers != null) {
    final List<TextWatcher> list = mWatchers;
    final int size = list.size();
    for (int i = 0; i < size; i++) {
      list.get(i).beforeTextChanged(s, start, count, after);
    }
  }
}

代码示例来源：origin: stackoverflow.com

mTextWatcher.beforeTextChanged(s, start, count, after);