写下安卓亮度调节的滑动bar控件的代码
时间: 2024-05-08 20:19:31 浏览: 11
以下是一个简单的安卓亮度调节滑动条的代码示例:
```xml
<SeekBar
android:id="@+id/brightness_seekbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="50" />
```
```java
SeekBar brightnessSeekBar = findViewById(R.id.brightness_seekbar);
brightnessSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
WindowManager.LayoutParams layoutParams = getWindow().getAttributes();
layoutParams.screenBrightness = progress / 255f;
getWindow().setAttributes(layoutParams);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
```
这段代码利用了安卓自带的SeekBar控件,通过监听进度条的变化,动态更新屏幕亮度。