android系统亮度调节代码.doc

Android系统亮度调节代码 概述：我比较怕麻烦，每句代码什么意思不多说了，都很简单的，看了就该明白。直接将自己写的源码贴出，希望对需要的人有所帮助！(没写好的地方请见谅)1. BrightnessActivity.javapackage com.bright;import android.app.Activity;import android.os.Bundle;import vider.Settings;import android.view.WindowManager;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;public class BrightnessActivity extends Activity protected static final String out = null;Overridepublic void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.brightness);updateToggles();private void updateToggles() SeekBar seekBar = (SeekBar) findViewById(R.id.MySeekBar);seekBar.setProgress(int) (vider.Settings.System.getInt(getContentResolver(),vider.Settings.System.SCREEN_BRIGHTNESS, 255);seekBar.setOnSeekBarChangeListener(seekListener);private OnSeekBarChangeListener seekListener = new OnSeekBarChangeListener() public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) if (fromUser) Integer tmpInt = seekBar.getProgress();System.out.println(tmpInt);vider.Settings.System.putInt(getContentResolver(),vider.Settings.System.SCREEN_BRIGHTNESS,tmpInt); / 0-255tmpInt = Settings.System.getInt(getContentResolver(),Settings.System.SCREEN_BRIGHTNESS, -1);WindowManager.LayoutParams lp = getWindow().getAttributes();Float tmpFloat = (float)tmpInt / 255;if (0 tmpFloat & tmpFloat = 1) lp.screenBrightness = tmpFloat;getWindow().setAttributes(lp);Overridepublic void onStartTrackingTouch(SeekBar seekBar) Overridep