嗨,我遇到Editext和Seekbar的问题。
问题拖动Seekbar时,它会将进度发送到Editext,这是常见现象,但是当我尝试清除按下清除按钮的Editext时,它只会清除1位数字,怎么能像普通editext一样清除所有数字?很多指导表示感谢:)
mSbTest = findViewById(R.id.sb_testing);
mEtTextSize = findViewById(R.id.et_text_size);
mSbTest.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(final SeekBar seekBar, int progress, boolean fromUser) {
mEtTextSize.setText(String.valueOf(seekBar.getProgress()));
mEtTextSize.setSelection(mEtTextSize.getText().length());
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
mEtTextSize.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (!s.toString().isEmpty()) {
setEditTextMaxLength(mEtTextSize, 9);
mCustomBarChart.TextSize(Integer.valueOf(s.toString()));
mCustomBarChart.invalidate();
mEtTextSize.removeTextChangedListener(this);
mSbTest.setProgress(selectedValue);
selectedValue = Integer.valueOf(s.toString());
mEtTextSize.addTextChangedListener(this);
}
}
});
请使用这个,它工作正常
sikbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
editText.setText(String.valueOf(i));
editText.setSelection(String.valueOf(i).length());
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
在onTextChange中使用此
@Override
public void afterTextChanged(Editable editable) {
int progress = Math.round(Float.parseFloat(editable.toString()));
sikbar.setProgress(progress);
}
在onTextChange中,请检查输入的大小,否则会引发异常。