問題描述

我正在嘗試根據在 EditText 中輸入的數字來更改 SeekBar 的進度，但由于某種原因 EditText 值變為到最大，我無法在 SeekBar 中滑動拇指.

I am trying to change the progress of a SeekBar based on the number entered in an EditText but for some reason the EditText value goes to the max and I can't slide the thumb in the SeekBar.

我希望實現的目標:如果在 EditText 中輸入的值介于 70 和 190 之間(包括兩個數字)，則將 SeekBar 的進度更改為該值.

What I am looking to achieve: If the value entered in the EditText anywhere between 70 and 190 (including both number) change the progress of the SeekBar to that value.

部分 Java 代碼:

Partial Java code:

etOne = (EditText) findViewById(R.id.etSyst);
        etOne.addTextChangedListener(new TextWatcher() {
            public void afterTextChanged(Editable s) {
                String filtered_str = s.toString();
                if (Integer.parseInt(filtered_str) >= 70 && Integer.parseInt(filtered_str) <= 190) {
                    sbSyst.setProgress(Integer.parseInt(filtered_str));
                }
            }
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            public void onTextChanged(CharSequence s, int start, int before, int count) {}
        });

部分 XML:

<SeekBar
            android:id="@+id/syst_bar"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_margin="10dp"
            android:progress="0"
            android:max="120"
            android:progressDrawable="@drawable/progress_bar"
            android:secondaryProgress="0"
            android:thumb="@drawable/thumb_state" />

我給每個值加 70，因為 SeekBar 從 0 開始，但我希望它從 70 開始.

I add 70 to each value, because SeekBar starts at 0, but I want it to start at 70.

使用上面的代碼后是這樣的:

After using the above code, this is what it looks like:

SeekBar 是最大數，EditText 也是最大數.

The SeekBar is at the maximum number and the EditText is at the maximum as well.

推薦答案

etOne = (EditText) findViewById(R.id.etSyst);
        etOne.addTextChangedListener(new TextWatcher() {
            public void afterTextChanged(Editable s) {
                int i = Integer.parseInt(s.toString());
                if (i >= 70 && i <= 190) {
                    sbSyst.setProgress( i - 70); // This ensures 0-120 value for seekbar
                }
            }
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            public void onTextChanged(CharSequence s, int start, int before, int count) {}
        });

這篇關于根據 EditText 值更改 SeekBar 進度的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！