android 应用实现屏幕下沉（android 4.4及以上）

屏幕下沉/状态栏透明

代码文件1：SystemBarTintManager 类设置状态栏的属性

package com.droi.smartlock.guide;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout.LayoutParams;

/**
* Class to manage status and navigation bar tint effects when using KitKat
* translucent system UI modes.
*
*/
public class SystemBarTintManager {

/** * The default system bar tint color value. */public static final int DEFAULT_TINT_COLOR = 0x99000000;private final SystemBarConfig mConfig;private boolean mStatusBarAvailable;private boolean mNavBarAvailable;private boolean mStatusBarTintEnabled;private boolean mNavBarTintEnabled;private View mStatusBarTintView;private View mNavBarTintView;private static boolean sIsMiuiV6;static {    try {        Class<?> sysClass = Class.forName("android.os.SystemProperties");        Method getStringMethod = sysClass.getDeclaredMethod("get", String.class);        sIsMiuiV6 = "V6".equals((String) getStringMethod.invoke(sysClass, "ro.miui.ui.version.name"));    } catch (Exception e) {        e.printStackTrace();    }}/** * Constructor. Call this in the host activity onCreate method after its * content view has been set. You should always create new instances when * the host activity is recreated. * * @param activity The host activity. */@TargetApi(19)public SystemBarTintManager(Activity activity) {    Window win = activity.getWindow();    ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {        // check theme attrs        int[] attrs = {android.R.attr.windowTranslucentStatus,                android.R.attr.windowTranslucentNavigation};        TypedArray a = activity.obtainStyledAttributes(attrs);        try {            mStatusBarAvailable = a.getBoolean(0, false);            mNavBarAvailable = a.getBoolean(1, false);        } finally {            a.recycle();        }        // check window flags        WindowManager.LayoutParams winParams = win.getAttributes();        int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;        if ((winParams.flags & bits) != 0) {            mStatusBarAvailable = true;        }        bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;        if ((winParams.flags & bits) != 0) {            mNavBarAvailable = true;        }    }    mConfig = new SystemBarConfig(activity, mStatusBarAvailable, mNavBarAvailable);    // device might not have virtual navigation keys    if (!mConfig.hasNavigtionBar()) {        mNavBarAvailable = false;    }    if (mStatusBarAvailable) {        setupStatusBarView(activity, decorViewGroup);    }    if (mNavBarAvailable) {        setupNavBarView(activity, decorViewGroup);    }}/** * Enable tinting of the system status bar. * * If the platform is running Jelly Bean or earlier, or translucent system * UI modes have not been enabled in either the theme or via window flags, * then this method does nothing. * * @param enabled True to enable tinting, false to disable it (default). */public void setStatusBarTintEnabled(boolean enabled) {    mStatusBarTintEnabled = enabled;    if (mStatusBarAvailable) {        mStatusBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);    }}/** * set status bar darkmode * @param darkmode * @param activity */public void setStatusBarDarkMode(boolean darkmode, Activity activity) {    if (sIsMiuiV6) {        Class<? extends Window> clazz = activity.getWindow().getClass();        try {        int darkModeFlag = 0;        Class<?> layoutParams = Class.forName("android.view.MiuiWindowManager$LayoutParams");        Field field = layoutParams.getField("EXTRA_FLAG_STATUS_BAR_DARK_MODE");        darkModeFlag = field.getInt(layoutParams);        Method extraFlagField = clazz.getMethod("setExtraFlags", int.class, int.class);        extraFlagField.invoke(activity.getWindow(), darkmode ? darkModeFlag : 0, darkModeFlag);        } catch (Exception e) {            e.printStackTrace();        }    }}/** * Enable tinting of the system navigation bar. * * If the platform does not have soft navigation keys, is running Jelly Bean * or earlier, or translucent system UI modes have not been enabled in either * the theme or via window flags, then this method does nothing. * * @param enabled True to enable tinting, false to disable it (default). */public void setNavigationBarTintEnabled(boolean enabled) {    mNavBarTintEnabled = enabled;    if (mNavBarAvailable) {        mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);    }}/** * Apply the specified color tint to all system UI bars. * * @param color The color of the background tint. */public void setTintColor(int color) {    setStatusBarTintColor(color);    setNavigationBarTintColor(color);}/** * Apply the specified drawable or color resource to all system UI bars. * * @param res The identifier of the resource. */public void setTintResource(int res) {    setStatusBarTintResource(res);    setNavigationBarTintResource(res);}/** * Apply the specified drawable to all system UI bars. * * @param drawable The drawable to use as the background, or null to remove it. */public void setTintDrawable(Drawable drawable) {    setStatusBarTintDrawable(drawable);    setNavigationBarTintDrawable(drawable);}/** * Apply the specified alpha to all system UI bars. * * @param alpha The alpha to use */public void setTintAlpha(float alpha) {    setStatusBarAlpha(alpha);    setNavigationBarAlpha(alpha);}/** * Apply the specified color tint to the system status bar. * * @param color The color of the background tint. */public void setStatusBarTintColor(int color) {    if (mStatusBarAvailable) {        mStatusBarTintView.setBackgroundColor(color);    }}/** * Apply the specified drawable or color resource to the system status bar. * * @param res The identifier of the resource. */public void setStatusBarTintResource(int res) {    if (mStatusBarAvailable) {        mStatusBarTintView.setBackgroundResource(res);    }}/** * Apply the specified drawable to the system status bar. * * @param drawable The drawable to use as the background, or null to remove it. */@SuppressWarnings("deprecation")public void setStatusBarTintDrawable(Drawable drawable) {    if (mStatusBarAvailable) {        mStatusBarTintView.setBackgroundDrawable(drawable);    }}/** * Apply the specified alpha to the system status bar. * * @param alpha The alpha to use */@TargetApi(11)public void setStatusBarAlpha(float alpha) {    if (mStatusBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {        mStatusBarTintView.setAlpha(alpha);    }}/** * Apply the specified color tint to the system navigation bar. * * @param color The color of the background tint. */public void setNavigationBarTintColor(int color) {    if (mNavBarAvailable) {        mNavBarTintView.setBackgroundColor(color);    }}/** * Apply the specified drawable or color resource to the system navigation bar. * * @param res The identifier of the resource. */public void setNavigationBarTintResource(int res) {    if (mNavBarAvailable) {        mNavBarTintView.setBackgroundResource(res);    }}/** * Apply the specified drawable to the system navigation bar. * * @param drawable The drawable to use as the background, or null to remove it. */@SuppressWarnings("deprecation")public void setNavigationBarTintDrawable(Drawable drawable) {    if (mNavBarAvailable) {        mNavBarTintView.setBackgroundDrawable(drawable);    }}/** * Apply the specified alpha to the system navigation bar. * * @param alpha The alpha to use */@TargetApi(11)public void setNavigationBarAlpha(float alpha) {    if (mNavBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {        mNavBarTintView.setAlpha(alpha);    }}/** * Get the system bar configuration. * * @return The system bar configuration for the current device configuration. */public SystemBarConfig getConfig() {    return mConfig;}/** * Is tinting enabled for the system status bar? * * @return True if enabled, False otherwise. */public boolean isStatusBarTintEnabled() {    return mStatusBarTintEnabled;}/** * Is tinting enabled for the system navigation bar? * * @return True if enabled, False otherwise. */public boolean isNavBarTintEnabled() {    return mNavBarTintEnabled;}private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {    mStatusBarTintView = new View(context);    LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getStatusBarHeight());    params.gravity = Gravity.TOP;    if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {        params.rightMargin = mConfig.getNavigationBarWidth();    }    mStatusBarTintView.setLayoutParams(params);    mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);    mStatusBarTintView.setVisibility(View.GONE);    decorViewGroup.addView(mStatusBarTintView);}private void setupNavBarView(Context context, ViewGroup decorViewGroup) {    mNavBarTintView = new View(context);    LayoutParams params;    if (mConfig.isNavigationAtBottom()) {        params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getNavigationBarHeight());        params.gravity = Gravity.BOTTOM;    } else {        params = new LayoutParams(mConfig.getNavigationBarWidth(), LayoutParams.MATCH_PARENT);        params.gravity = Gravity.RIGHT;    }    mNavBarTintView.setLayoutParams(params);    mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);    mNavBarTintView.setVisibility(View.GONE);    decorViewGroup.addView(mNavBarTintView);}/** * Class which describes system bar sizing and other characteristics for the current * device configuration. * */public static class SystemBarConfig {    private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";    private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";    private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";    private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";    private final boolean mTranslucentStatusBar;    private final boolean mTranslucentNavBar;    private final int mStatusBarHeight;    private final int mActionBarHeight;    private final boolean mHasNavigationBar;    private final int mNavigationBarHeight;    private final int mNavigationBarWidth;    private final boolean mInPortrait;    private final float mSmallestWidthDp;    private SystemBarConfig(Activity activity, boolean translucentStatusBar, boolean traslucentNavBar) {        Resources res = activity.getResources();        mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);        mSmallestWidthDp = getSmallestWidthDp(activity);        mStatusBarHeight = getInternalDimensionSize(res, STATUS_BAR_HEIGHT_RES_NAME);        mActionBarHeight = getActionBarHeight(activity);        mNavigationBarHeight = getNavigationBarHeight(activity);        mNavigationBarWidth = getNavigationBarWidth(activity);        mHasNavigationBar = (mNavigationBarHeight > 0);        mTranslucentStatusBar = translucentStatusBar;        mTranslucentNavBar = traslucentNavBar;    }    @TargetApi(14)    private int getActionBarHeight(Context context) {        int result = 0;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {            TypedValue tv = new TypedValue();            context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);            result = context.getResources().getDimensionPixelSize(tv.resourceId);        }        return result;    }    @TargetApi(14)    private int getNavigationBarHeight(Context context) {        Resources res = context.getResources();        int result = 0;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {            if (!ViewConfiguration.get(context).hasPermanentMenuKey()) {                String key;                if (mInPortrait) {                    key = NAV_BAR_HEIGHT_RES_NAME;                } else {                    key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;                }                return getInternalDimensionSize(res, key);            }        }        return result;    }    @TargetApi(14)    private int getNavigationBarWidth(Context context) {        Resources res = context.getResources();        int result = 0;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {            if (!ViewConfiguration.get(context).hasPermanentMenuKey()) {                return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);            }        }        return result;    }    private int getInternalDimensionSize(Resources res, String key) {        int result = 0;        int resourceId = res.getIdentifier(key, "dimen", "android");        if (resourceId > 0) {            result = res.getDimensionPixelSize(resourceId);        }        return result;    }    @SuppressLint("NewApi")    private float getSmallestWidthDp(Activity activity) {        DisplayMetrics metrics = new DisplayMetrics();        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {            activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);        } else {            // TODO this is not correct, but we don't really care pre-kitkat            activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);        }        float widthDp = metrics.widthPixels / metrics.density;        float heightDp = metrics.heightPixels / metrics.density;        return Math.min(widthDp, heightDp);    }    /**     * Should a navigation bar appear at the bottom of the screen in the current     * device configuration? A navigation bar may appear on the right side of     * the screen in certain configurations.     *     * @return True if navigation should appear at the bottom of the screen, False otherwise.     */    public boolean isNavigationAtBottom() {        return (mSmallestWidthDp >= 600 || mInPortrait);    }    /**     * Get the height of the system status bar.     *     * @return The height of the status bar (in pixels).     */    public int getStatusBarHeight() {        return mStatusBarHeight;    }    /**     * Get the height of the action bar.     *     * @return The height of the action bar (in pixels).     */    public int getActionBarHeight() {        return mActionBarHeight;    }    /**     * Does this device have a system navigation bar?     *     * @return True if this device uses soft key navigation, False otherwise.     */    public boolean hasNavigtionBar() {        return mHasNavigationBar;    }    /**     * Get the height of the system navigation bar.     *     * @return The height of the navigation bar (in pixels). If the device does not have     * soft navigation keys, this will always return 0.     */    public int getNavigationBarHeight() {        return mNavigationBarHeight;    }    /**     * Get the width of the system navigation bar when it is placed vertically on the screen.     *     * @return The width of the navigation bar (in pixels). If the device does not have     * soft navigation keys, this will always return 0.     */    public int getNavigationBarWidth() {        return mNavigationBarWidth;    }    /**     * Get the layout inset for any system UI that appears at the top of the screen.     *     * @param withActionBar True to include the height of the action bar, False otherwise.     * @return The layout inset (in pixels).     */    public int getPixelInsetTop(boolean withActionBar) {        return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);    }    /**     * Get the layout inset for any system UI that appears at the bottom of the screen.     *     * @return The layout inset (in pixels).     */    public int getPixelInsetBottom() {        if (mTranslucentNavBar && isNavigationAtBottom()) {            return mNavigationBarHeight;        } else {            return 0;        }    }    /**     * Get the layout inset for any system UI that appears at the right of the screen.     *     * @return The layout inset (in pixels).     */    public int getPixelInsetRight() {        if (mTranslucentNavBar && !isNavigationAtBottom()) {            return mNavigationBarWidth;        } else {            return 0;        }    }}

}

在需要的activity中调用方法：

public void setSystemBarTint(){
/**
* 沉浸式状态栏
*/
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
// 状态栏透明需要在创建SystemBarTintManager 之前调用。
setTranslucentStatus(true);
}

    SystemBarTintManager tintManager = new SystemBarTintManager(activity);    tintManager.setStatusBarTintEnabled(true);    // 使StatusBarTintView 和 actionbar的颜色保持一致，风格统一。    tintManager.setStatusBarTintResource(0x000000000);    // tintManager.setStatusBarTintDrawable(getResources().getDrawable(R.drawable.bg1));    tintManager.setStatusBarDarkMode(false, activity);    // 设置状态栏的文字颜色    tintManager.setStatusBarDarkMode(false, activity);}@TargetApi(19)private void setTranslucentStatus(boolean on) {    Window win = activity.getWindow();    WindowManager.LayoutParams winParams = win.getAttributes();    final int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;    if (on) {        winParams.flags |= bits;    } else {        winParams.flags &= ~bits;    }    win.setAttributes(winParams);}

更多相关文章

随机推荐