解决输入法遮挡布局和华为手机底部虚拟按键遮挡底部界面的方法

先上最终的代码：

public class AndroidWorkaround {

    public static void assistActivity(View content) {
        new AndroidWorkaround(content);
    }

    private View mChildOfContent;
    private int usableHeightPrevious;
    private ViewGroup.LayoutParams frameLayoutParams;

    private AndroidWorkaround(View content) {
        mChildOfContent = content;
        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            public void onGlobalLayout() {
                possiblyResizeChildOfContent();
            }
        });
        frameLayoutParams = mChildOfContent.getLayoutParams();
    }

    private void possiblyResizeChildOfContent() {
        int usableHeightNow = computeUsableHeight();
        if (usableHeightNow != usableHeightPrevious) {

            frameLayoutParams.height = usableHeightNow;
            mChildOfContent.requestLayout();
            usableHeightPrevious = usableHeightNow;
        }
    }

    private int computeUsableHeight() {
        Rect r = new Rect();
        mChildOfContent.getWindowVisibleDisplayFrame(r);
        return (r.bottom);
    }

    public static boolean checkDeviceHasNavigationBar(Context context) {
        boolean hasNavigationBar = false;
        Resources rs = context.getResources();
        int id = rs.getIdentifier("config_showNavigationBar", "bool", "android");
        if (id > 0) {
            hasNavigationBar = rs.getBoolean(id);
        }
        try {
            Class systemPropertiesClass = Class.forName("android.os.SystemProperties");
            Method m = systemPropertiesClass.getMethod("get", String.class);
            String navBarOverride = (String) m.invoke(systemPropertiesClass, "qemu.hw.mainkeys");
            if ("1".equals(navBarOverride)) {
                hasNavigationBar = false;
            } else if ("0".equals(navBarOverride)) {
                hasNavigationBar = true;
            }
        } catch (Exception e) {

        }
        return hasNavigationBar;

    }

}

注意点：这里构造方法的参数是当前你写的布局view

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PS：

1.单单解决输入法挡住软键盘

public class AndroidBug5497Workaround {

    // For more information, see https://code.google.com/p/android/issues/detail?id=5497
    // To use this class, simply invoke assistActivity() on an Activity that already has its content view set.

    public static void assistActivity(Activity activity) {
        new AndroidBug5497Workaround(activity);
    }

    private Activity activity;
    private View mChildOfContent;
    private int usableHeightPrevious;
    private FrameLayout.LayoutParams frameLayoutParams;

    private AndroidBug5497Workaround(Activity activity) {
        this.activity = activity;
        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
        mChildOfContent = content.getChildAt(0);
        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            public void onGlobalLayout() {
                possiblyResizeChildOfContent();
            }
        });
        frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
    }

    private void possiblyResizeChildOfContent() {
        int usableHeightNow = computeUsableHeight();
        if (usableHeightNow != usableHeightPrevious) {
            int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();

            //这个判断是为了解决19之前的版本不支持沉浸式状态栏导致布局显示不完全的问题
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
                Rect frame = new Rect();
                activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
                int statusBarHeight = frame.top;
                usableHeightSansKeyboard -= statusBarHeight;
            }
            int heightDifference = usableHeightSansKeyboard - usableHeightNow;
            if (heightDifference > (usableHeightSansKeyboard / 4)) {
                // keyboard probably just became visible
                frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
            } else {
                // keyboard probably just became hidden
                frameLayoutParams.height = usableHeightSansKeyboard;
            }
            mChildOfContent.requestLayout();
            usableHeightPrevious = usableHeightNow;
        }
    }

    private int computeUsableHeight() {
        Rect frame = new Rect();
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int statusBarHeight = frame.top;

        Rect r = new Rect();
        mChildOfContent.getWindowVisibleDisplayFrame(r);

        //这个判断是为了解决19之后的版本在弹出软键盘时，键盘和推上去的布局（adjustResize）之间有黑色区域的问题
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            return (r.bottom - r.top) + statusBarHeight;
        }

        return (r.bottom - r.top);
    }

}

2.单单解决华为手机虚拟按键挡住底部界面

public class AndroidBug54971Workaround {
    // For more information, see https://code.google.com/p/android/issues/detail?id=5497
    // To use this class, simply invoke assistActivity() on an Activity that already has its content view set.

    /**
     * 关联要监听的视图
     *
     * @param viewObserving
     */
    public static void assistActivity(View viewObserving) {
        new AndroidBug54971Workaround(viewObserving);
    }

    private View mViewObserved;//被监听的视图
    private int usableHeightPrevious;//视图变化前的可用高度
    private ViewGroup.LayoutParams frameLayoutParams;

    private AndroidBug54971Workaround(View viewObserving) {
        mViewObserved = viewObserving;
        //给View添加全局的布局监听器
        mViewObserved.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            public void onGlobalLayout() {
                resetLayoutByUsableHeight(computeUsableHeight());
            }
        });
        frameLayoutParams = mViewObserved.getLayoutParams();
    }

    private void resetLayoutByUsableHeight(int usableHeightNow) {
        //比较布局变化前后的View的可用高度
        if (usableHeightNow != usableHeightPrevious) {
            //如果两次高度不一致
            //将当前的View的可用高度设置成View的实际高度
            frameLayoutParams.height = usableHeightNow;
            mViewObserved.requestLayout();//请求重新布局
            usableHeightPrevious = usableHeightNow;
        }
    }

    /**
     * 计算视图可视高度
     *
     * @return
     */
    private int computeUsableHeight() {
        Rect r = new Rect();
        mViewObserved.getWindowVisibleDisplayFrame(r);
        return (r.bottom - r.top);
    }
}

注意点：setContentView(R.layout.content_frame); 

AndroidBug54971Workaround.assistActivity(findViewById(android.R.id.content));