将导航抽屉放在状态栏下

Question

我正在尝试让我的导航抽屉进入状态栏.我已经阅读了很多关于ScrimInsetsFrameLayout视图的内容,我尝试实现它,但由于某种原因它不会被删除.

这是我使用/编写的代码.

XML DrawerLayout:

<android.support.v4.widget.DrawerLayout
    android:id="@+id/drawer_layout"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <FrameLayout
            android:id="@+id/content_frame"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

        <include layout="@layout/toolbar" />

    </FrameLayout>

    <com.andrewq.planets.util.ScrimInsetsFrameLayout
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/linearLayout"
        android:layout_width="304dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:insetForeground="#4000">

        <ListView
            android:id="@+id/left_drawer"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:choiceMode="singleChoice" />
    </com.andrewq.planets.util.ScrimInsetsFrameLayout>


</android.support.v4.widget.DrawerLayout>

ScrimInsetsFrameLayout.java:

package com.andrewq.planets.util;

/*
* Copyright 2014 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.widget.FrameLayout;

import com.andrewq.planets.R;

/**
 * A layout that draws something in the insets passed to {@link #fitSystemWindows(Rect)}, i.e. the area above UI chrome
 * (status and navigation bars, overlay action bars).
 */
public class ScrimInsetsFrameLayout extends FrameLayout {
    private Drawable mInsetForeground;

    private Rect mInsets;
    private Rect mTempRect = new Rect();
    private OnInsetsCallback mOnInsetsCallback;

    public ScrimInsetsFrameLayout(Context context) {
        super(context);
        init(context, null, 0);
    }

    public ScrimInsetsFrameLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs, 0);
    }

    public ScrimInsetsFrameLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context, attrs, defStyle);
    }

    private void init(Context context, AttributeSet attrs, int defStyle) {
        final TypedArray a = context.obtainStyledAttributes(attrs,
                R.styleable.ScrimInsetsView, defStyle, 0);
        if (a == null) {
            return;
        }
        mInsetForeground = a.getDrawable(R.styleable.ScrimInsetsView_insetForeground);
        a.recycle();

        setWillNotDraw(true);
    }

    @Override
    protected boolean fitSystemWindows(Rect insets) {
        mInsets = new Rect(insets);
        setWillNotDraw(mInsetForeground == null);
        ViewCompat.postInvalidateOnAnimation(this);
        if (mOnInsetsCallback != null) {
            mOnInsetsCallback.onInsetsChanged(insets);
        }
        return true; // consume insets
    }

    @Override
    public void draw(Canvas canvas) {
        super.draw(canvas);

        int width = getWidth();
        int height = getHeight();
        if (mInsets != null && mInsetForeground != null) {
            int sc = canvas.save();
            canvas.translate(getScrollX(), getScrollY());

            // Top
            mTempRect.set(0, 0, width, mInsets.top);
            mInsetForeground.setBounds(mTempRect);
            mInsetForeground.draw(canvas);

            // Bottom
            mTempRect.set(0, height - mInsets.bottom, width, height);
            mInsetForeground.setBounds(mTempRect);
            mInsetForeground.draw(canvas);

            // Left
            mTempRect.set(0, mInsets.top, mInsets.left, height - mInsets.bottom);
            mInsetForeground.setBounds(mTempRect);
            mInsetForeground.draw(canvas);

            // Right
            mTempRect.set(width - mInsets.right, mInsets.top, width, height - mInsets.bottom);
            mInsetForeground.setBounds(mTempRect);
            mInsetForeground.draw(canvas);

            canvas.restoreToCount(sc);
        }
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        if (mInsetForeground != null) {
            mInsetForeground.setCallback(this);
        }
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        if (mInsetForeground != null) {
            mInsetForeground.setCallback(null);
        }
    }

    /**
     * Allows the calling container to specify a callback for custom processing when insets change (i.e. when
     * {@link #fitSystemWindows(Rect)} is called. This is useful for setting padding on UI elements based on
     * UI chrome insets (e.g. a Google Map or a ListView). When using with ListView or GridView, remember to set
     * clipToPadding to false.
     */
    public void setOnInsetsCallback(OnInsetsCallback onInsetsCallback) {
        mOnInsetsCallback = onInsetsCallback;
    }

    public static interface OnInsetsCallback {
        public void onInsetsChanged(Rect insets);
    }
}

最后,这是我的styles.xml for values-v21:

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="AppThemeNavDrawer" parent="Theme.AppCompat.NoActionBar">
        <item name="colorAccent">#F8F8F8</item>
        <item name="android:windowTranslucentStatus">true</item>

        <item name="windowActionBar">false</item>
        <item name="windowActionModeOverlay">true</item>
        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>
</resources>

我查看了2014 I/O应用程序源代码以及这个问题,我不知道有什么不同.

这是我到目前为止的截图,减去状态栏下的抽屉:

我已经完成了其他一切工作,这是我需要做的最后一件事.非常感谢帮助!

编辑:

为了澄清,我想让图像在状态栏下着色,就像大多数Google Apps和Google Now一样.

Answer 1

添加android:fitsSystemWindows="false"到DrawerLayout将解决问题

Answer 2

有不同的方法来达到预期的结果.您可以通过样式或代码启用半透明.

我创建了一个MaterialDrawer(遵循Android Material Design Guidelines),它实现了所有这些并为您处理所有事情.在这里阅读更多内容:https://github.com/mikepenz/MaterialDrawer/

如果你想自己创建它,你总是要决定哪个是你想要支持的最低api和/或你是否需要拆分你的样式.

因此,要启用translucentStatusbar,您必须至少在API v19上,或者为v19 +创建一个分离样式.values-v19 这将看起来像这样

<style name="YourTheme.TranslucentStatus" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowTranslucentStatus">true</item>
</style>

所以现在这将把你的完整布局移到状态栏下面.几乎在所有情况下,您现在都想在抽屉内容和普通视图内容的顶部添加填充.

您可以通过添加24dp填充来完成此操作.

这不是一个非常好的实现.因此,使用Google IO 2014应用中使用的ScrimInsetsLayout有不同的方法.https://github.com/google/iosched/blob/master/android/src/main/java/com/google/samples/apps/iosched/ui/widget/ScrimInsetsFrameLayout.java

这将是您的内容布局,您可以在其上设置状态栏的颜色.您可以在此处找到有关如何使用它的详细说明:https://stackoverflow.com/a/26932228

它需要一些时间来适应样式和/或ScrimInsetsLayout.

编辑:

有关如何以编程方式处理此问题的更复杂示例:

if (Build.VERSION.SDK_INT >= 19 && Build.VERSION.SDK_INT < 21) {
    //enable translucent statusbar via flags
    setTranslucentStatusFlag(true);
}
if (Build.VERSION.SDK_INT >= 19) {
    mActivity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
if (Build.VERSION.SDK_INT >= 21) {
    //we don't need the translucent flag this is handled by the theme
    setTranslucentStatusFlag(false);
    //set the statusbarcolor transparent to remove the black shadow
    mActivity.getWindow().setStatusBarColor(Color.TRANSPARENT);
}

//add a padding to the content of the drawer (25dp on devices starting with api v19)
mDrawerContentRoot.setPadding(0, mActivity.getResources().getDimensionPixelSize(R.dimen.tool_bar_top_padding), 0, 0);

// define the statusBarColor
mDrawerContentRoot.setInsetForeground(mStatusBarColor);


private void setTranslucentStatusFlag(boolean on) {
    if (Build.VERSION.SDK_INT >= 19) {
        Window win = mActivity.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);
    }
}

EDIT2:

解决此问题的完整解决方案是清理项目中的所有布局.布局和样式的某种组合导致了麻烦.

完整的更改可以在此拉取请求中找到:https: //github.com/Andrew-Quebe/Planets-Gradle/commit/83e28c09253af6e807b6f4e94baca8fbca3fc7c8