message: [bugfix] Picker: render error when set data async
diff: @@ -57,12 +57,7 @@ export default sfc({
  onChange(columnIndex) {
  if (this.simple) {
  - this.$emit(
  - 'change',
  - this,
  - this.getColumnValue(0),
  - this.getColumnIndex(0)
  - );
  + this.$emit('change', this, this.getColumnValue(0), this.getColumnIndex(0));
  } else {
  this.$emit('change', this, this.getValues(), columnIndex);
  }
  @@ -104,10 +99,7 @@ export default sfc({
  // set options of column by index
  setColumnValues(index, options) {
  const column = this.children[index];
  - if (
  - column &&
  - JSON.stringify(column.options) !== JSON.stringify(options)
  - ) {
  + if (column && JSON.stringify(column.options) !== JSON.stringify(options)) {
  column.options = options;
  column.setIndex(0);
  }
  @@ -178,10 +170,12 @@ export default sfc({
  return (
  <div class={bem()}>
  {Toolbar}
  - {this.loading && (
  + {this.loading ? (
  <div class={bem('loading')}>
  <Loading />
  </div>
  + ) : (
  + h()
  )}
  <div class={bem('columns')} style={columnsStyle} onTouchmove={prevent}>
  {columns.map((item, index) => (
  @@ -197,10 +191,7 @@ export default sfc({
  }}
  />
  ))}
  - <div
  - class={['van-hairline--top-bottom', bem('frame')]}
  - style={frameStyle}
  - />
  + <div class={['van-hairline--top-bottom', bem('frame')]} style={frameStyle} />
  </div>
  </div>
  );
  