Android端input控件在默认输入一个字符后，删除不能调用input回调 about incubator-weex HOT 5 CLOSED

Please offer a complete example on http://dotwe.org/vue

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for more example see https://issues.apache.org/jira/browse/WEEX-612

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发现只在默认只输入一个字符才会出现这个bug。应该原生的Edittext 在输入值setValue会触犯onTextChanged事件，weex在setValue时候通过mIgnoreNextOnInputEvent变量对这种情况进行了过滤从处理。原因是AbstractEditComponent.java文件中当删除一个字符时候会触犯onTextChanged事件，
public void onTextChanged(CharSequence s, int start, int before, int count) { if (mIgnoreNextOnInputEvent) { mIgnoreNextOnInputEvent = false; return; } if (mBeforeText.equals(s.toString())) { return; }
当删除一个字符时候 ，这时候mBeforeText.equals(s.toString()) 成立都是空值，所以返回不触发事件。
可修改如：
if (mIgnoreNextOnInputEvent) { mIgnoreNextOnInputEvent = false; mBeoreText = s.toString(); return; }

已提交pull request:
#1522

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@Hanks10100 a complete example on http://dotwe.org/vue/5064d32097f7242f97dfcc644ab8f538

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The PR has been merged. #1522

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