夜间模式

最新推荐文章于 2024-03-30 09:33:25 发布

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最新推荐文章于 2024-03-30 09:33:25 发布

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分类专栏：夜间模式

本文链接：https://blog.youkuaiyun.com/qq_38913065/article/details/73845186

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首先，activity本身是一个窗体，他主要负责的是视图，可以给他添加视图或者删除视图，然后有一个蒙版覆盖在上面，要给activity加一层蒙版，这时候我们需要先初始化蒙版，在初始化蒙版时候，要先得到系统的WindowManager，然后再setLayoutParams，而LayoutParams需要实例化一个WindowManager.LayoutParams，这个方法里面有三个参数，分别是1.布局

文件类型 2.flag(标志),设置无焦点，不可触摸 3.图像格式，透明。这三个参数根据情况而定。其中就是透明度的变化，可以给他进行设置，然后是夜间模式的切换，我们可以写一个方法，如果是夜间模式就添加到view中，如果不是就立即移除。最后点击切换按钮时候，切换到夜间模式就行了。其中一个要实现自定义的activity。最后在保存一下夜间模式的状态，用SharedPreferences保存，先得到getSharedPreferences，然后获得编辑器sp.edit()，然后传putBoolean()，最后提交commit()，这样就可以了。

代码：

MainActivity中：

import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;

/**
* 夜间模式的切换，字体颜色的改变
*/
public class MainActivityextendsBaseActivity {

    private ListView mListview;
    private List<Demo> list;
    private Button mButton;
    private boolean isNight=false;
    private ImageView imgDay;
    private LinearLayout layout;

    @Override
    protected voidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //初始化view
        mListview= (ListView) findViewById(R.id.list_view);
        mButton = (Button) findViewById(R.id.btn_switch);
        imgDay= (ImageView) findViewById(R.id.day);
        layout = (LinearLayout) findViewById(R.id.layout);
        //初始化数据
        list=new ArrayList<>();
        list.add(newDemo(true,"还让所有", R.mipmap.ic_launcher));
        list.add(newDemo(true,"不太舒服的柔软月考", R.mipmap.ic_launcher));
        list.add(newDemo(false,"裤日违反"));
        list.add(newDemo(true,"格外收入的结构", R.mipmap.ic_launcher));
        list.add(newDemo(false,"哈尔一般"));
        list.add(newDemo(true,"合同预计", R.mipmap.ic_launcher));
        list.add(newDemo(false,"好风如水没法"));
        list.add(newDemo(true,"开发与你说这个", R.mipmap.ic_launcher));
        list.add(newDemo(true,"好温柔和台湾", R.mipmap.ic_launcher));
        list.add(newDemo(false,"还让我说而阿根廷与"));
        list.add(newDemo(false,"还让我说而阿根廷与"));
        list.add(newDemo(true,"红烧肉投入其他", R.mipmap.ic_launcher));
        list.add(newDemo(true,"红烧肉投入其他", R.mipmap.ic_launcher));
        list.add(newDemo(true,"红烧肉投入其他", R.mipmap.ic_launcher));
        //设置适配器
        mListview.setAdapter(newDemoAdapter(this,list));

        mButton.setOnClickListener(newView.OnClickListener() {
            @Override
            public voidonClick(View v) {
                isNight = !isNight;
                BaseApplication.getIntance().setNight(isNight);
                switchMode(isNight);
                //// 得到Window的视图
                View view = getWindow().getDecorView();
                changeTextColor((ViewGroup) view);
                changeImage();
            }
        });
    }
    /**
     * 日夜间模式切换的时候改变自身的图片
     */
    private voidchangeImage() {
        imgDay.setImageResource(BaseApplication.getIntance().getResId(R.mipmap.b_newcare_tabbar));
    }
    // 在视图可见可交互的时候才能改变视图
    @Override
    protected voidonResume() {
        super.onResume();
        // 一进入Activity，先拿到全局的isNight
        isNight= BaseApplication.getIntance().isNight();
        if (isNight) {
            switchMode(isNight);
        }
        changeTextColor((ViewGroup) getWindow().getDecorView());
        changeImage();
    }
}

activity_main中:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.bawei.liujie.nightmode.MainActivity">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/return_text"
            android:layout_width="wrap_content"
            android:text="返回"
            android:padding="5dp"
            android:textColor="#000"
            android:layout_height="wrap_content" />
        <ImageView
            android:id="@+id/day"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_alignParentRight="true"
            android:background="@mipmap/b_newcare_tabbar"/>
    </RelativeLayout>

    <Button
        android:id="@+id/btn_switch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="切换夜间模式"/>
    <ListView
        android:id="@+id/list_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"></ListView>
</LinearLayout>

Demo类：



public class Demo {
    private boolean hsgImg;
    private String name;
    private int id;


    public Demo() {
    }

    public Demo(boolean hsgImg, String name) {
        this.hsgImg = hsgImg;
        this.name = name;
    }

    public Demo(boolean hsgImg, String name, int id) {
        this.hsgImg = hsgImg;
        this.id = id;
        this.name = name;
    }

    public boolean isHsgImg() {
        return hsgImg;
    }

    public void setHsgImg(boolean hsgImg) {
        this.hsgImg = hsgImg;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

DemoAdapter：

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.List;

public class DemoAdapter extends BaseAdapter {
    private Context context;
    private List<Demo> list;
    private static final int TYPE_HAS_PIC = 0;
    private static final int TYPE_NO_PIC = 1;

    public DemoAdapter(Context context, List<Demo> list) {
        this.context = context;
        this.list = list;
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {
        boolean type=list.get(position).isHsgImg();
        if(type){
            return TYPE_HAS_PIC;
        }else{
            return TYPE_NO_PIC;
        }
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        int type=getItemViewType(position);
        if (convertView == null) {
            holder = new ViewHolder();
            switch (type){
                case TYPE_HAS_PIC:
                    convertView = View.inflate(context, R.layout.item, null);
                    holder.icon = (ImageView) convertView.findViewById(R.id.icon);
                    holder.text = (TextView) convertView.findViewById(R.id.text_view);
                    break;
                case TYPE_NO_PIC:
                    convertView = View.inflate(context, R.layout.item2, null);
                    holder.text = (TextView) convertView.findViewById(R.id.text_view);
                    break;
            }
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        switch (type){
            case TYPE_HAS_PIC:
                holder.icon.setImageResource(list.get(position).getId());
                holder.text.setText(list.get(position).getName());
                break;
            case TYPE_NO_PIC:
                holder.text.setText(list.get(position).getName());
                break;
        }
        return convertView;
    }

    class ViewHolder {
        ImageView icon;
        TextView text;
    }
}

item：

<?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="horizontal">

    <ImageView
        android:id="@+id/icon"
        android:layout_width="50dp"
        android:layout_height="50dp" />

    <TextView
        android:id="@+id/text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"/>
</LinearLayout>

item2：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"/>
</LinearLayout>

BaseApplication： import android.app.Application; import android.content.SharedPreferences; import android.graphics.Color; import java.util.HashMap; import java.util.Map;  public class BaseApplication extends Application { private static BaseApplication application; private boolean isNight = true; // 是否是夜间模式  private SharedPreferences sp; // map存值，key=日间模式的图， value=夜间模式的图  private Map<Integer, Integer> map; @Override  public void onCreate() { super.onCreate(); application = this; sp = getSharedPreferences("config", MODE_PRIVATE); isNight = sp.getBoolean("is_night", false); } /**  * 类似单例模式，返回的是当前Application的对象  * @return  */  public static BaseApplication getIntance() { return application; } public boolean isNight() { return isNight; } /**  * 初始化颜色和图片的集合  */  private void initImages() { map=new HashMap<>(); map.put(R.mipmap.b_newcare_tabbar, R.mipmap.b_newcare_tabbar_press); map.put(Color.BLUE, Color.YELLOW); } /**  * 日夜间模式分别得到不同的资源文件  * @param resId  * @return  */  public int getResId(int resId) { if (map == null) { initImages(); } // 夜间模式，显示value的资源  if (isNight) { return map.get(resId); } else { // 日间模式，显示key的资源  return resId; } } public void setNight(boolean night) { isNight = night; //设置夜间模式的时候保存到本地  sp.edit().putBoolean("is_night",night).commit(); } }

BaseActivity：

import android.graphics.Color;import android.graphics.PixelFormat;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.ViewGroup;import android.view.WindowManager;import android.widget.TextView;public class BaseActivity extends AppCompatActivity { private WindowManager.LayoutParams params; private WindowManager manager; private View view; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_base); //初始化蒙版 initPreView(); } /** * 切换夜间模式 */ public void switchMode(boolean isNight) { if (isNight) { //夜间模式的时候添加 manager.addView(view,params); }else{ //非夜间模式的时候移除 manager.removeView(view); } } /** * 改变文字的颜色 * @param viewGroup */ public void changeTextColor(ViewGroup viewGroup) { for (int i = 0; i < viewGroup.getChildCount(); i++) { // 判断子控件是否是textview if (viewGroup.getChildAt(i) instanceof TextView) { TextView txt = (TextView) viewGroup.getChildAt(i); // 得到模式的颜色值 int resId = BaseApplication.getIntance().getResId(Color.BLUE); txt.setTextColor(resId); } else if(viewGroup.getChildAt(i) instanceof ViewGroup){// viewGroup.getChildAt(i).setBackgroundColor(Color.BLACK); // 递归调用 changeTextColor((ViewGroup) viewGroup.getChildAt(i)); } } } //初始化蒙版 private void initPreView() { view = new View(this); view.setBackgroundColor(getResources().getColor(R.color.colorWindow)); //得到系统的WindowManager manager = (WindowManager) getSystemService(WINDOW_SERVICE); //布局参数：1.布局文件类型 2.flag，设置无焦点，不可触摸 3.图像格式，透明 params = new WindowManager.LayoutParams(WindowManager.LayoutParams.TYPE_APPLICATION , WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE, PixelFormat.TRANSLUCENT);// view.setLayoutParams(params); }}