android中和屏幕相关的操作

/**
* desc : 屏幕相关工具类
* 获取手机分辨率 getDeviceWidth、getDeviceHeight
* 设置透明状态栏(api大于19方可使用) setTransparentStatusBar
* 隐藏状态栏(注释萌萌哒) hideStatusBar
* 获取状态栏高度 getStatusBarHeight
* 判断状态栏是否存在 isStatusBarExists
* 获取ActionBar高度 getActionBarHeight
* 显示通知栏 showNotificationBar
* 隐藏通知栏 hideNotificationBar
* 设置屏幕为横屏(注释萌萌哒) setLandscape
* 获取屏幕截图 snapShotWithStatusBar、snapShotWithoutStatusBar
* 判断是否锁屏 isScreenLock
*/
public class ScreenUtils {

private ScreenUtils() {}/** * 获取屏幕的宽度px * * @param context 上下文 * @return 屏幕宽px */public static int getScreenWidth(Context context) {    WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);    DisplayMetrics outMetrics = new DisplayMetrics();// 创建了一张白纸    windowManager.getDefaultDisplay().getMetrics(outMetrics);// 给白纸设置宽高    return outMetrics.widthPixels;}/** * 获取屏幕的高度px * * @param context 上下文 * @return 屏幕高px */public static int getScreenHeight(Context context) {    WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);    DisplayMetrics outMetrics = new DisplayMetrics();// 创建了一张白纸    windowManager.getDefaultDisplay().getMetrics(outMetrics);// 给白纸设置宽高    return outMetrics.heightPixels;}/** * 设置透明状态栏(api大于19方可使用) * <p>可在Activity的onCreat()中调用</p> * <p>需在顶部控件布局中加入以下属性让内容出现在状态栏之下</p> * <p>android:clipToPadding="true"</p> * <p>android:fitsSystemWindows="true"</p> * * @param activity activity */public static void setTransparentStatusBar(Activity activity) {    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {        //透明状态栏        activity.getWindow().addFlags(LayoutParams.FLAG_TRANSLUCENT_STATUS);        //透明导航栏        activity.getWindow().addFlags(LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);    }}/** * 隐藏状态栏 * <p>也就是设置全屏，一定要在setContentView之前调用，否则报错</p> * <p>此方法Activity可以继承AppCompatActivity</p> * <p>启动的时候状态栏会显示一下再隐藏，比如QQ的欢迎界面</p> * <p>在配置文件中Activity加属性android:theme="@android:style/Theme.NoTitleBar.Fullscreen"</p> * <p>如加了以上配置Activity不能继承AppCompatActivity，会报错</p> * * @param activity activity */public static void hideStatusBar(Activity activity) {    activity.requestWindowFeature(Window.FEATURE_NO_TITLE);    activity.getWindow().setFlags(LayoutParams.FLAG_FULLSCREEN,            LayoutParams.FLAG_FULLSCREEN);}/** * 获取状态栏高度 * * @param context 上下文 * @return 状态栏高度 */public static int getStatusBarHeight(Context context) {    int result = 0;    int resourceId = context.getResources()            .getIdentifier("status_bar_height", "dimen", "android");    if (resourceId > 0) {        result = context.getResources().getDimensionPixelSize(resourceId);    }    return result;}/** * 判断状态栏是否存在 * * @param activity activity * @return {@code true}: 存在<br>{@code false}: 不存在 */public static boolean isStatusBarExists(Activity activity) {    LayoutParams params = activity.getWindow().getAttributes();    return (params.flags & LayoutParams.FLAG_FULLSCREEN) != LayoutParams.FLAG_FULLSCREEN;}/** * 获取ActionBar高度 * * @param activity activity * @return ActionBar高度 */public static int getActionBarHeight(Activity activity) {    TypedValue tv = new TypedValue();    if (activity.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {        return TypedValue.complexToDimensionPixelSize(tv.data, activity.getResources().getDisplayMetrics());    }    return 0;}/** * 显示通知栏 * <p>需添加权限 {@code <uses-permission android:name="android.permission.EXPAND_STATUS_BAR"/>}</p> * * @param context        上下文 * @param isSettingPanel {@code true}: 打开设置<br>{@code false}: 打开通知 */public static void showNotificationBar(Context context, boolean isSettingPanel) {    String methodName = (Build.VERSION.SDK_INT <= 16) ? "expand"            : (isSettingPanel ? "expandSettingsPanel" : "expandNotificationsPanel");    invokePanels(context, methodName);}/** * 隐藏通知栏 * <p>需添加权限 {@code <uses-permission android:name="android.permission.EXPAND_STATUS_BAR"/>}</p> * * @param context 上下文 */public static void hideNotificationBar(Context context) {    String methodName = (Build.VERSION.SDK_INT <= 16) ? "collapse" : "collapsePanels";    invokePanels(context, methodName);}/** * 反射唤醒通知栏 * * @param context    上下文 * @param methodName 方法名 */private static void invokePanels(Context context, String methodName) {    try {        Object service = context.getSystemService("statusbar");        Class<?> statusBarManager = Class.forName("android.app.StatusBarManager");        Method expand = statusBarManager.getMethod(methodName);        expand.invoke(service);    } catch (Exception e) {        e.printStackTrace();    }}/** * 设置屏幕为横屏 * <p>还有一种就是在Activity中加属性android:screenOrientation="landscape"</p> * <p>不设置Activity的android:configChanges时，切屏会重新调用各个生命周期，切横屏时会执行一次，切竖屏时会执行两次</p> * <p>设置Activity的android:configChanges="orientation"时，切屏还是会重新调用各个生命周期，切横、竖屏时只会执行一次</p> * <p>设置Activity的android:configChanges="orientation|keyboardHidden|screenSize"（4.0以上必须带最后一个参数）时 * 切屏不会重新调用各个生命周期，只会执行onConfigurationChanged方法</p> * * @param activity activity */public static void setLandscape(Activity activity) {    activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);}/** * 获取当前屏幕截图，包含状态栏 * * @param activity activity * @return Bitmap */public static Bitmap captureWithStatusBar(Activity activity) {    View view = activity.getWindow().getDecorView();    view.setDrawingCacheEnabled(true);    view.buildDrawingCache();    Bitmap bmp = view.getDrawingCache();    int width = getScreenWidth(activity);    int height = getScreenHeight(activity);    Bitmap bp = Bitmap.createBitmap(bmp, 0, 0, width, height);    view.destroyDrawingCache();    return bp;}/** * 获取当前屏幕截图，不包含状态栏 * <p>需要用到上面获取状态栏高度getStatusBarHeight的方法</p> * * @param activity activity * @return Bitmap */public static Bitmap captureWithoutStatusBar(Activity activity) {    View view = activity.getWindow().getDecorView();    view.setDrawingCacheEnabled(true);    view.buildDrawingCache();    Bitmap bmp = view.getDrawingCache();    int statusBarHeight = getStatusBarHeight(activity);    int width = getScreenWidth(activity);    int height = getScreenHeight(activity);    Bitmap bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height - statusBarHeight);    view.destroyDrawingCache();    return bp;}/** * 判断是否锁屏 * * @param context 上下文 * @return {@code true}: 是<br>{@code false}: 否 */public static boolean isScreenLock(Context context) {    KeyguardManager km = (KeyguardManager) context            .getSystemService(Context.KEYGUARD_SERVICE);    return km.inKeyguardRestrictedInputMode();}

}

谢谢…