Android沉浸式状态栏+图片背景+标题栏渐变+背景伸缩
16lz
2022-07-04
Android沉浸式状态栏+图片背景+标题栏渐变+背景伸缩
今天做项目时，刚好用到了一部分Android沉浸式状态栏的技术，我就单独写了出来
该部分代码在PersonView中
首先是自定义ScrollView实现Toolbar（标题栏）渐变
效果展示图：
编程思想：
1、自定义一个类，继承自ScrollView，并重写它的 onScrollChanged 方法；
2、在 onScrollChanged 中获取 ScrollView 在Y轴的移动距离，并根据此距离改变 Toolbar(标题栏) 的透明度。
示例代码：
类：MainActivity.java
package com.example.personview;import android.os.Bundle;import android.support.annotation.Nullable;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;import android.widget.Toast;import com.example.personview.base.BaseActivity;import com.example.personview.impl.ActionBarClickListener;import com.example.personview.widget.TranslucentActionBar;import com.example.personview.widget.TranslucentScrollView;/** * Created by Administrator * time:2019/8/13 */public class MainActivity extends BaseActivity implements ActionBarClickListener, TranslucentScrollView.TranslucentChangedListener, View.OnClickListener { private TranslucentScrollView translucentScrollView; private TranslucentActionBar actionBar; private View zoomView; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); initClick();//初始化点击事件 } private void init() { actionBar = (TranslucentActionBar) findViewById(R.id.actionbar); //初始actionBar actionBar.setData("个人中心", 0, null, 0, null, null); //开启渐变 actionBar.setNeedTranslucent(); //设置状态栏高度 actionBar.setStatusBarHeight(getStatusBarHeight()); translucentScrollView = (TranslucentScrollView) findViewById(R.id.pullzoom_scrollview); //设置透明度变化监听 translucentScrollView.setTranslucentChangedListener(this); //关联需要渐变的视图 translucentScrollView.setTransView(actionBar); zoomView = findViewById(R.id.lay_header); //关联伸缩的视图 translucentScrollView.setPullZoomView(zoomView); } @Override public void onLeftClick() { } @Override public void onRightClick() { } @Override public void onTranslucentChanged(int transAlpha) { actionBar.tvTitle.setVisibility(transAlpha > 48 ? View.VISIBLE : View.GONE); } /** * 初始化点击事件 * 获取布局文件toast_signtoday.xml里的控件 **/ private void initClick() { LinearLayout person_sign = (LinearLayout) findViewById(R.id.person_sign); person_sign.setOnClickListener(this); LinearLayout person_footprint = (LinearLayout) findViewById(R.id.person_footprint); person_footprint.setOnClickListener(this); LinearLayout person_publish = (LinearLayout) findViewById(R.id.person_publish); person_publish.setOnClickListener(this); LinearLayout person_photowall = (LinearLayout) findViewById(R.id.person_photowall); person_photowall.setOnClickListener(this); LinearLayout person_lucky = (LinearLayout) findViewById(R.id.person_lucky); person_lucky.setOnClickListener(this); LinearLayout person_invite = (LinearLayout) findViewById(R.id.person_invite); person_invite.setOnClickListener(this); LinearLayout person_set = (LinearLayout) findViewById(R.id.person_set); person_set.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.person_sign: //签到 LayoutInflater inflater = getLayoutInflater(); View layout = inflater.inflate(R.layout.activity_toast_signtoday, null); Toast toast = new Toast(getApplicationContext()); toast.setGravity(Gravity.CENTER, 0, 0); toast.setDuration(Toast.LENGTH_LONG); toast.setView(layout); toast.show(); break; case R.id.person_footprint: //足迹 Toast.makeText(this,"足迹",Toast.LENGTH_SHORT).show(); break; case R.id.person_publish: //我发布的 Toast.makeText(this,"我发布的",Toast.LENGTH_SHORT).show(); break; case R.id.person_photowall: //照片墙 Toast.makeText(this,"照片墙",Toast.LENGTH_SHORT).show(); break; case R.id.person_lucky: //开始抽奖 Toast.makeText(this,"开始抽奖",Toast.LENGTH_SHORT).show(); break; case R.id.person_invite: //邀请奖励 Toast.makeText(this,"邀请奖励",Toast.LENGTH_SHORT).show(); break; case R.id.person_set: //设置 Toast.makeText(this,"设置",Toast.LENGTH_SHORT).show(); break; } }}TranslucentScrollView.java
package com.example.personview.widget;import android.animation.ObjectAnimator;import android.animation.ValueAnimator;import android.content.Context;import android.graphics.Color;import android.support.annotation.ColorInt;import android.support.v4.graphics.ColorUtils;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.view.WindowManager;import android.widget.ScrollView;import com.example.personview.R;import com.example.personview.utils.SizeUtils;/** * Created by 晓辉(xiaohui) * time:2019/8/13 */public class TranslucentScrollView extends ScrollView { static final String TAG = "TranslucentScrollView"; //伸缩视图 private View zoomView; //伸缩视图初始高度 private int zoomViewInitHeight = 0; // 记录首次按下位置 private float mFirstPosition = 0; // 是否正在放大 private Boolean mScaling = false; //渐变的视图 private View transView; //渐变颜色 private int transColor = Color.WHITE; //渐变开始位置 private int transStartY = 50; //渐变结束位置 private int transEndY = 300; //渐变开始默认位置，Y轴，50dp private final int DFT_TRANSSTARTY = 50; //渐变结束默认位置，Y轴，300dp private final int DFT_TRANSENDY = 300; private TranslucentScrollView.TranslucentChangedListener translucentChangedListener; public interface TranslucentChangedListener { /** * 透明度变化，取值范围0-255 * * @param transAlpha */ void onTranslucentChanged(int transAlpha); } public TranslucentScrollView(Context context) { super(context); } public TranslucentScrollView(Context context, AttributeSet attrs) { super(context, attrs); } public TranslucentScrollView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public void setTranslucentChangedListener(TranslucentScrollView.TranslucentChangedListener translucentChangedListener) { this.translucentChangedListener = translucentChangedListener; } /** * 设置伸缩视图 * * @param zoomView */ public void setPullZoomView(View zoomView) { this.zoomView = zoomView; zoomViewInitHeight = zoomView.getLayoutParams().height; if (zoomViewInitHeight == LayoutParams.MATCH_PARENT || zoomViewInitHeight == WindowManager.LayoutParams.WRAP_CONTENT) { zoomView.post(new Runnable() { @Override public void run() { zoomViewInitHeight = TranslucentScrollView.this.zoomView.getHeight(); } }); } } /** * 设置渐变视图 * * @param transView 渐变的视图 */ public void setTransView(View transView) { setTransView(transView, getResources().getColor(R.color.colorPrimary), SizeUtils.dip2px(getContext(), DFT_TRANSSTARTY), SizeUtils.dip2px(getContext(), DFT_TRANSENDY)); } /** * 设置渐变视图 * * @param transView 渐变的视图 * @param transColor 渐变颜色 * @param transEndY 渐变结束位置 */ public void setTransView(View transView, @ColorInt int transColor, int transStartY, int transEndY) { this.transView = transView; //初始视图-透明 this.transView.setBackgroundColor(ColorUtils.setAlphaComponent(transColor, 0)); this.transStartY = transStartY; this.transEndY = transEndY; this.transColor = transColor; if (transStartY > transEndY) { throw new IllegalArgumentException("transStartY 不得大于 transEndY .. "); } } /** * 获取透明度 * * @return */ private int getTransAlpha() { float scrollY = getScrollY(); if (transStartY != 0) { if (scrollY <= transStartY) { return 0; } else if (scrollY >= transEndY) { return 255; } else { return (int) ((scrollY - transStartY) / (transEndY - transStartY) * 255); } } else { if (scrollY >= transEndY) { return 255; } return (int) ((transEndY - scrollY) / transEndY * 255); } } /** * 重置ZoomView */ private void resetZoomView() { final ViewGroup.LayoutParams lp = zoomView.getLayoutParams(); final float h = zoomView.getLayoutParams().height;// ZoomView当前高度 // 设置动画 ValueAnimator anim = ObjectAnimator.ofFloat(0.0F, 1.0F).setDuration(200); anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { float cVal = (Float) animation.getAnimatedValue(); lp.height = (int) (h - (h - zoomViewInitHeight) * cVal); zoomView.setLayoutParams(lp); } }); anim.start(); } @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) { super.onScrollChanged(l, t, oldl, oldt); int transAlpha = getTransAlpha(); if (transView != null) { Log.d(TAG, "[onScrollChanged .. in ], 透明度 == " + transAlpha); transView.setBackgroundColor(ColorUtils.setAlphaComponent(transColor, transAlpha)); } if (translucentChangedListener != null) { translucentChangedListener.onTranslucentChanged(transAlpha); } } @Override public boolean onTouchEvent(MotionEvent event) { if (zoomView != null) { ViewGroup.LayoutParams params = zoomView.getLayoutParams(); switch (event.getAction()) { case MotionEvent.ACTION_UP: //手指离开后恢复图片 mScaling = false; resetZoomView(); break; case MotionEvent.ACTION_MOVE: if (!mScaling) { if (getScrollY() == 0) { mFirstPosition = event.getY(); } else { break; } } int distance = (int) ((event.getY() - mFirstPosition) * 0.6); if (distance < 0) { break; } mScaling = true; params.height = zoomViewInitHeight + distance; Log.d(TAG, "params.height == " + params.height + ", zoomViewInitHeight == " + zoomViewInitHeight + ", distance == " + distance); zoomView.setLayoutParams(params); return true; } } return super.onTouchEvent(event); }}TranslucentActionBar.java
package com.example.personview.widget;import android.content.Context;import android.text.TextUtils;import android.util.AttributeSet;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;import android.widget.TextView;import com.example.personview.R;import com.example.personview.impl.ActionBarClickListener;/** * 支持渐变的 actionBar * Created by 晓辉(xiaohui) * time: 2019/8/13. */public final class TranslucentActionBar extends LinearLayout { private View layRoot; private View vStatusBar; private View layLeft; private View layRight; public TextView tvTitle; private TextView tvLeft; private TextView tvRight; private View iconLeft; private View iconRight; public TranslucentActionBar(Context context) { this(context, null); } public TranslucentActionBar(Context context, AttributeSet attrs) { super(context, attrs); init(); } public TranslucentActionBar(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } private void init() { setOrientation(HORIZONTAL); View contentView = inflate(getContext(), R.layout.actionbar_trans, this); layRoot = contentView.findViewById(R.id.lay_transroot); vStatusBar = contentView.findViewById(R.id.v_statusbar); tvTitle = (TextView) contentView.findViewById(R.id.tv_actionbar_title); tvLeft = (TextView) contentView.findViewById(R.id.tv_actionbar_left); tvRight = (TextView) contentView.findViewById(R.id.tv_actionbar_right); iconLeft = contentView.findViewById(R.id.iv_actionbar_left); iconRight = contentView.findViewById(R.id.v_actionbar_right); } /** * 设置状态栏高度 * * @param statusBarHeight */ public void setStatusBarHeight(int statusBarHeight) { ViewGroup.LayoutParams params = vStatusBar.getLayoutParams(); params.height = statusBarHeight; vStatusBar.setLayoutParams(params); } /** * 设置是否需要渐变 */ public void setNeedTranslucent() { setNeedTranslucent(true, false); } /** * 设置是否需要渐变,并且隐藏标题 * * @param translucent */ public void setNeedTranslucent(boolean translucent, boolean titleInitVisibile) { if (translucent) { layRoot.setBackgroundDrawable(null); } if (!titleInitVisibile) { tvTitle.setVisibility(View.GONE); } } /** * 设置标题 * * @param strTitle */ public void setTitle(String strTitle) { if (!TextUtils.isEmpty(strTitle)) { tvTitle.setText(strTitle); } else { tvTitle.setVisibility(View.GONE); } } /** * 设置数据 * * @param strTitle * @param resIdLeft * @param strLeft * @param resIdRight * @param strRight * @param listener */ public void setData(String strTitle, int resIdLeft, String strLeft, int resIdRight, String strRight, final ActionBarClickListener listener) { if (!TextUtils.isEmpty(strTitle)) { tvTitle.setText(strTitle); } else { tvTitle.setVisibility(View.GONE); } if (!TextUtils.isEmpty(strLeft)) { tvLeft.setText(strLeft); tvLeft.setVisibility(View.VISIBLE); } else { tvLeft.setVisibility(View.GONE); } if (!TextUtils.isEmpty(strRight)) { tvRight.setText(strRight); tvRight.setVisibility(View.VISIBLE); } else { tvRight.setVisibility(View.GONE); } if (resIdLeft == 0) { iconLeft.setVisibility(View.GONE); } else { iconLeft.setBackgroundResource(resIdLeft); iconLeft.setVisibility(View.VISIBLE); } if (resIdRight == 0) { iconRight.setVisibility(View.GONE); } else { iconRight.setBackgroundResource(resIdRight); iconRight.setVisibility(View.VISIBLE); } if (listener != null) { layLeft = findViewById(R.id.lay_actionbar_left); layRight = findViewById(R.id.lay_actionbar_right); layLeft.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { listener.onLeftClick(); } }); layRight.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { listener.onRightClick(); } }); } }}布局文件：activity_main.xml
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" xmlns:app="http://schemas.android.com/apk/res-auto"> <com.example.personview.widget.TranslucentScrollView android:id="@+id/pullzoom_scrollview" android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <LinearLayout android:id="@+id/lay_header" android:layout_width="match_parent" android:layout_height="248dp" android:background="@mipmap/bg_banner_my" android:orientation="vertical"> <View android:id="@+id/v_statusbar" android:layout_width="match_parent" android:layout_height="0.0dp" android:background="@color/translate" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <RelativeLayout android:layout_width="137dp" android:layout_height="137dp" android:layout_centerInParent="true" android:background="@mipmap/bg_avatar"> <de.hdodenhof.circleimageview.CircleImageView android:id="@+id/image_head" android:layout_width="105dp" android:layout_height="105dp" android:layout_centerInParent="true" android:src="@mipmap/dft_avatar" app:civ_border_color="#FFFFFF" app:civ_border_width="1dp" /> </RelativeLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:layout_marginBottom="15dp" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center"> <TextView android:id="@+id/name" style="@style/text_white" android:layout_gravity="center_horizontal" android:text="@string/name" android:textColor="@color/white" android:textSize="17sp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center"> <TextView android:id="@+id/frag4_age" android:layout_width="30dp" android:layout_height="22dp" android:background="@drawable/bg_person_left" android:gravity="center_horizontal" android:text="20" android:textSize="11sp" /> <ImageView android:id="@+id/frag4_sex" android:layout_width="30dp" android:layout_height="22dp" android:paddingRight="6dp" android:paddingTop="4dp" android:paddingBottom="2dp" android:background="@drawable/bg_person_right" android:src="@drawable/ic_person_man" /> </LinearLayout> </LinearLayout> </RelativeLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/white" android:orientation="horizontal" android:paddingTop="8dp" android:paddingBottom="8dp"> <LinearLayout android:id="@+id/lay_car" android:layout_width="0.0dp" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center_horizontal" android:orientation="vertical"> <ImageView android:layout_width="50dp" android:layout_height="50dp" android:scaleType="fitXY" android:src="@mipmap/ic_shopcar_my" /> <TextView style="@style/text_black" android:layout_marginTop="5dp" android:text="@string/contribute" /> <TextView style="@style/text_black" android:id="@+id/contribute" android:layout_marginTop="5dp" android:text="1000+" /> </LinearLayout> <LinearLayout android:id="@+id/lay_history" android:layout_width="0.0dp" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center_horizontal" android:orientation="vertical"> <ImageView android:id="@+id/imageView" android:layout_width="50dp" android:layout_height="50dp" android:scaleType="fitXY" android:src="@mipmap/ic_consume_history" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_marginTop="5dp" android:text="@string/grade" /> <TextView style="@style/text_black" android:id="@+id/grade" android:layout_width="wrap_content" android:layout_marginTop="5dp" android:text="V10" /> </LinearLayout> <LinearLayout android:id="@+id/lay_wallet" android:layout_width="0.0dp" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center_horizontal" android:orientation="vertical"> <ImageView android:layout_width="50dp" android:layout_height="50dp" android:scaleType="fitXY" android:src="@mipmap/ic_wallet" /> <TextView style="@style/text_black" android:layout_marginTop="5dp" android:text="@string/coin" /> <TextView style="@style/text_black" android:id="@+id/coin" android:layout_marginTop="5dp" android:text="500" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/white" android:orientation="vertical"> <View android:layout_width="match_parent" android:layout_height="15dp" android:background="@color/bg_main" /> <LinearLayout android:id="@+id/person_sign" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_sign" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:text="@string/sign" /> <TextView android:id="@+id/tv_has_sign" style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="3dp" android:layout_weight="1" android:text="@string/sign" android:textColor="@color/gray_dft" android:textSize="13sp" android:visibility="invisible" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View style="@style/horizontal_divider_light" android:layout_marginLeft="16dp" /> <LinearLayout android:id="@+id/person_footprint" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_address" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:layout_weight="1" android:text="@string/footprint" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="15dp" android:background="@color/bg_main" /> <LinearLayout android:id="@+id/person_publish" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_agent_my" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:layout_weight="1" android:text="@string/publish" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View style="@style/horizontal_divider_light" android:layout_marginLeft="16dp" /> <LinearLayout android:id="@+id/person_photowall" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_teacher_my" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:layout_weight="1" android:text="@string/photowall" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="15dp" android:background="@color/bg_main" /> <LinearLayout android:id="@+id/person_lucky" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_luck_my" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:layout_weight="1" android:text="@string/lucky" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View style="@style/horizontal_divider_light" android:layout_marginLeft="16dp" /> <LinearLayout android:id="@+id/person_invite" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_invite_my" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:layout_weight="1" android:text="@string/invite" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="15dp" android:background="@color/bg_main" /> <LinearLayout android:id="@+id/person_set" android:layout_width="match_parent" android:layout_height="55dp" android:background="@color/white" android:orientation="horizontal"> <ImageView android:layout_width="15dp" android:layout_height="15dp" android:layout_gravity="center_vertical" android:layout_marginLeft="16dp" android:background="@mipmap/ic_set_my" /> <TextView style="@style/text_black" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="17dp" android:layout_weight="1" android:text="@string/set" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="16dp" android:background="@mipmap/ic_right_gray" /> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="140dp" android:background="@color/bg_main" /> </LinearLayout> </LinearLayout> </com.example.personview.widget.TranslucentScrollView> <com.example.personview.widget.TranslucentActionBar android:id="@+id/actionbar" android:layout_width="match_parent" android:layout_height="wrap_content" /></RelativeLayout>activity_actionbar.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <com.example.personview.widget.TranslucentActionBar android:id="@+id/actionbar" android:layout_width="match_parent" android:layout_height="wrap_content" /> <com.example.personview.widget.TranslucentScrollView android:id="@+id/scrollview" android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:layout_width="match_parent" android:layout_height="1000dp" android:orientation="vertical" /> </com.example.personview.widget.TranslucentScrollView></LinearLayout>actionbar_trans.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/lay_transroot" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/colorPrimary" android:orientation="vertical"> <View android:id="@+id/v_statusbar" android:layout_width="match_parent" android:layout_height="1.0dp" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="45dp" android:orientation="vertical"> <RelativeLayout android:id="@+id/lay_actionbar_left" android:layout_width="100dp" android:layout_height="match_parent" android:orientation="horizontal"> <ImageView android:id="@+id/iv_actionbar_left" android:layout_width="20dp" android:layout_height="20dp" android:layout_centerVertical="true" android:layout_marginLeft="10dp" android:background="@mipmap/ic_left_light" android:visibility="gone" /> <TextView android:id="@+id/tv_actionbar_left" style="@style/text_white" android:layout_height="match_parent" android:layout_marginLeft="10dp" android:layout_toRightOf="@+id/iv_actionbar_left" android:gravity="center_vertical" android:maxLength="2" android:singleLine="true" android:text="返回" android:visibility="gone" /> </RelativeLayout> <TextView android:id="@+id/tv_actionbar_title" style="@style/text_white" android:layout_centerInParent="true" android:text="标题" android:textSize="16sp" /> <RelativeLayout android:id="@+id/lay_actionbar_right" android:layout_width="100dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:gravity="right" android:orientation="horizontal"> <View android:id="@+id/v_actionbar_right" android:layout_width="20dp" android:layout_height="20dp" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:layout_marginRight="10dp" android:visibility="gone" /> <TextView android:id="@+id/tv_actionbar_right" style="@style/text_white" android:layout_height="match_parent" android:layout_marginRight="10dp" android:layout_toLeftOf="@+id/v_actionbar_right" android:gravity="center_vertical|right" android:singleLine="true" android:visibility="gone" /> </RelativeLayout> </RelativeLayout></LinearLayout>注意：全面屏要使标题栏渐变，除了需要在mainActivity.java里声明外，还要在AndroidManifest.xml中将theme设置成为android:theme="@style/TranslucentTheme"；并且引入三个style样式文件，适应不同的机型。
好了核心代码就是这些，如下有项目完整包
下载地址：https://download.csdn.net/download/qq_41894451/11538983
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