public void createSeekBar(View customView) {
SeekBar brightbar = (SeekBar) customView.findViewById(R.id.seekBar_light);
brightbar.setMax(255);
brightbar.setProgress(200);
try {
// get the current system brightness
brightness = System.getInt(this.getContentResolver(), System.SCREEN_BRIGHTNESS);
brightbar.setProgress(SettingUtils.getSetting(ComicImageViewActivity.this, "light", 125));
} catch (SettingNotFoundException e) {
Toast.makeText(this, "不能获取系统亮度", Toast.LENGTH_SHORT).show();
return;
}
// register OnSeekBarChangeListener, so it can actually change values
brightbar.setOnSeekBarChangeListener(
new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// set the system brightness using the brightness variable value
// if(Settings.System.getInt(cResolver,
// Settings.System.SCREEN_BRIGHTNESS_MODE) ==
// Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC)
// System.putInt(cResolver, System.SCREEN_BRIGHTNESS,
// brightness);
// preview brightness changes at this window
// get the current window attributes
LayoutParams layoutpars = getWindow().getAttributes();
// set the brightness of this window
layoutpars.screenBrightness = brightness / (float) 255;
// apply attribute changes to this window
getWindow().setAttributes(layoutpars);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
// sets the minimal brightness level
// if seek bar is 20 or any value below
if (progress <= 10) {
// set the brightness to 20
brightness = 10;
} else // brightness is greater than 20
{
// sets brightness variable based on the progress bar
brightness = progress;
}
}
});
}
private void LightShow() {
// preview brightness changes at this window
// get the current window attributes
LayoutParams layoutpars = getWindow().getAttributes();
// set the brightness of this window
int light = 100;
try {
light = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS);
layoutpars.screenBrightness =
SettingUtils.getSetting(ComicImageViewActivity.this, "light", light) / (float) 255;
// apply attribute changes to this window
getWindow().setAttributes(layoutpars);
} catch (SettingNotFoundException e) {
e.printStackTrace();
}
}