Android 如何限制搜索栏
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how to limit seekbar
提问by Shishir.bobby
回答by Paresh Mayani
In SeekBar you can set only max value.
在 SeekBar 你 can set only max value.
<SeekBar android:id="@+id/SeekBar01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="50"/>
And, You cannot directly set the minimum value to the seekbar.
并且，您不能直接为搜索栏设置最小值。
SeekBar mSeekbar = (SeekBar) findViewById(R.id.SeekBar01);
mSeekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
{
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
length_edit.setText(Integer.toString(progress + 20));
}
public void onStartTrackingTouch(SeekBar seekBar) {}
public void onStopTrackingTouch(SeekBar seekBar) {}
});
As you see min progress you can sum with min which I would like - in your case 20.
当您看到 min 进度时，您可以用我想要的 min 求和 - 在您的情况下为 20。
回答by Romain Guy
Set the max value to 30 and add 20 to the values you read from the SeekBar.
将最大值设置为 30，并将 20 添加到您从 SeekBar 读取的值。
回答by Oleksandr Nos
The simplest way to do this is to just limit it in the SeekBar.OnSeekBarChangeListener()for your SeekBar.
最简单的方法是将它限制在SeekBar.OnSeekBarChangeListener()您的SeekBar.
First, you need to create field with min or default value. Then set this value when creating SeekBar:
首先，您需要创建具有最小值或默认值的字段。然后在创建时设置此值SeekBar：
private int fillDefault;
In onCreateView()of a Fragmentor onCreateof an Activity:
在onCreateView()aFragment或aonCreate中Activity：
fillDefault = 20;
fillSeekBar.setProgress(fillDefault);
Second, implement the listener for it:
其次，为它实现监听器：
fillSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
// Notification that the progress level has changed.
if (progress < fillDefault){
seekBar.setProgress(fillDefault); // magic solution, ha
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// Notification that the user has started a touch gesture.
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Notification that the user has finished a touch gesture.
}
});
It works. Simple and awesome:D
有用。简单又棒：D
回答by Günay Gültekin
For example;
例如;
public static int LENGTH_MIN_VALUE = 20;
public static int LENGTH_MAX_VALUE = 50;
SeekBar seekBar = (SeekBar) findViewById(R.id.passwordSeekBar);
seekBar.setMax(LENGTH_MAX_VALUE);
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if(progress <= Constract.PASSWORD_LENGTH_MIN_VALUE){
progress = Constract.PASSWORD_LENGTH_MIN_VALUE + progress;
}
String numberAsString = String.valueOf(progress);
seekNumberView.setText(numberAsString);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
});
回答by WannaGetHigh
I have answered this question here : How to set seekbar min and max value.
我在这里回答了这个问题：How to set seekbar min and max value。
With simple math you can set the min value, the max value and even the step of your seekbar.
通过简单的数学运算，您可以设置搜索栏的最小值、最大值甚至步长。
Hope this helps !
希望这可以帮助 ！
回答by Andrei Nae
You can try this:
你可以试试这个：
seekBar.setMax(max_value-min_value);
