JD项目的借鉴（1）

<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="3dp"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/layout_web_topbar"
android:progressDrawable="@drawable/progressbar" />

<WebView
android:id="@+id/webView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/progressBar1" />

WebView mWebView = (WebView) findViewById(R.id.webView1);
final ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar1);
WebSettings settings = mWebView.getSettings();
settings.setJavaScriptEnabled(true);
mWebView.loadUrl(url);
mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
progressBar.setProgress(newProgress);
if(progressBar.getProgress() == 100) {
progressBar.setVisibility(View.GONE);
}
}
});

/**
* 亮度调节
*/
private void initBrightness() {
// 取得当前亮度
int normal = Settings.System.getInt(mActivity.getContentResolver(),
Settings.System.SCREEN_BRIGHTNESS, 255);
mSeekBarBrightness = (SeekBar) inflate.findViewById(R.id.seekBar_light);
// 进度条绑定当前亮度
mSeekBarBrightness.setProgress(normal);
mSeekBarBrightness
.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// 取得当前进度
int tmpInt = seekBar.getProgress();

// 当进度小于80时，设置成80，防止太黑看不见的后果。
if (tmpInt < 80) {
tmpInt = 80;
}
// 根据当前进度改变亮度
WindowManager.LayoutParams wl = mActivity.getWindow()
.getAttributes();
float tmpFloat = (float) tmpInt / 255;
if (tmpFloat > 0 && tmpFloat <= 1) {
wl.screenBrightness = tmpFloat;
}
mActivity.getWindow().setAttributes(wl);
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}

@Override
public void onProgressChanged(SeekBar seekBar,
int progress, boolean fromUser) {
}
});
}

case R.id.btn_default:
int tmpInt = Settings.System.getInt(mActivity.getContentResolver(),
Settings.System.SCREEN_BRIGHTNESS, -1);
WindowManager.LayoutParams wl = mActivity.getWindow().getAttributes();
float tmpFloat = (float) tmpInt / 255;
if (tmpFloat > 0 && tmpFloat <= 1) {
wl.screenBrightness = tmpFloat;
}
mActivity.getWindow().setAttributes(wl);
break;