andorid透明屏幕

实现步骤:

manifest中:

<!-- 配置 实时壁纸 service -->
<service
    android:label="@string/app_name"
    android:name=".service.CameraLiveWallpaper"
    android:permission="android.permission.BIND_WALLPAPER"
    >
    <!--为实时壁纸配置intent filter -->
    <intent-filter>
        <action android:name="android.service.wallpaper.WallpaperService" />
    </intent-filter>
    <!-- 为实时壁纸配置meta data -->
    <meta-data android:name="android.service.wallpaper"
        android:resource="@xml/livewallpaper"/>
</service>

<activity android:name=".wallpaper.MainActivity" />

2.在res文件夹下面新建一个xml文件夹 然后新建一个livewallpaper.xml 内容如下:

<?xml version="1.0" encoding="utf-8"?>
<!-- ic_launcher 预览时显示的图片-->
<wallpaper
xmlns:android="http://schemas.android.com/apk/res/android"
android:thumbnail="@mipmap/ic_launcher" />

3.新建实现动态壁纸的LiveWallpaper.java:

package com.dyf.dyfkotlindemo.service;

import android.hardware.Camera;
import android.service.wallpaper.WallpaperService;
import android.view.MotionEvent;
import android.view.SurfaceHolder;

import java.io.IOException;

/**
 * Created by dyf on 2017/7/26.
 */

public class CameraLiveWallpaper extends WallpaperService {

    //实现wallpaperService 必须实现的抽象方法
    @Override
    public Engine onCreateEngine() {
        //返回自定义的CameraEngine
        return new CameraEngine();
    }

    class CameraEngine extends Engine implements Camera.PreviewCallback {
        private Camera camera;

        @Override
        public void onCreate(SurfaceHolder surfaceHolder) {
            super.onCreate(surfaceHolder);

            startPreview();
            //设置处理触摸事件
            setTouchEventsEnabled(true);
        }

        @Override
        public void onTouchEvent(MotionEvent event) {
            super.onTouchEvent(event);
            //事件处理:点击拍照 ,长按拍照
        }

        @Override
        public void onDestroy() {
            super.onDestroy();
            stopPreview();
        }


        //这个一定要加, 不然不行 黑屏 小米4c 亲测有效
        @Override
        public void onVisibilityChanged(boolean visible) {
            if (visible) {
                startPreview();
            } else {
                stopPreview();
            }
        }


        public void startPreview(){
            camera = Camera.open();
            camera.setDisplayOrientation(90);
            try {
                camera.setPreviewDisplay(getSurfaceHolder());
            } catch (IOException e) {
                e.printStackTrace();
            }
            camera.startPreview();
        }

        public void stopPreview(){
            if (camera != null){
                camera.stopPreview();
                camera.setPreviewCallback(null);
//                camera.lock();
                camera.release();
                //
                camera = null;
            }
        }

        @Override
        public void onPreviewFrame(byte[] bytes, Camera camera) {
            camera.addCallbackBuffer(bytes);
        }
    }


}

4.在MainActivity中添加如下代码:

package com.dyf.dyfkotlindemo.wallpaper;

import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;

import com.dyf.dyfkotlindemo.R;

/**
 * Created by dyf on 2017/7/26.
 */

public class MainActivity extends AppCompatActivity {

    private static final int PERMISSIONS_REQUEST_CAMERA = 454;
    private Context mContext;
    static final String PERMISSION_CAMERA = Manifest.permission.CAMERA;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_wallpaper);
        mContext = this;
        findViewById(R.id.text).setOnClickListener(v -> {
            checkSelfPermission();
        });
    }

    void checkSelfPermission(){
        if (ContextCompat.checkSelfPermission(mContext, PERMISSION_CAMERA) !=
                PackageManager.PERMISSION_GRANTED){
            ActivityCompat.requestPermissions(this,
                    new String[]{PERMISSION_CAMERA},
                    PERMISSIONS_REQUEST_CAMERA);
        }else {
            startWallpaper();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode){
            case PERMISSIONS_REQUEST_CAMERA: {
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
                    startWallpaper();
                }else{
                    Toast.makeText(mContext, getString(R.string._lease_open_permissions), Toast.LENGTH_SHORT).show();
                }
                return;
            }
        }
    }

    void startWallpaper(){
        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
        Intent chooser = Intent.createChooser(pickWallpaper, getString(R.string.choose_wallpaper));
        startActivity(chooser);
    }
}

附:string.xml

<resources>
    <string name="app_name">dyfkotlinDemo</string>


    <string name="content">
史上最浅显易懂的Git教程！\n\r
为什么要编写这个教程？因为我在学习Git的过程中，买过书，也在网上Google了一堆Git相关的文章和教程，但令人失望的是，这些教程不是难得令人发指，就是简单得一笔带过，或者，只支离破碎地介绍Git的某几个命令，还有直接从Git手册粘贴帮助文档的，总之，初学者很难找到一个由浅入深，学完后能立刻上手的Git教程。\n\r
既然号称史上最浅显易懂的Git教程，那这个教程有什么让你怦然心动的特点呢？\n\r
首先，本教程绝对面向初学者，没有接触过版本控制概念的读者也可以轻松入门，不必担心起步难度；\n\r
其次，本教程实用性超强，边学边练，一点也不觉得枯燥。而且，你所学的Git命令是“充分且必要”的，掌握了这些东西，你就可以通过Git轻松地完成你的工作。\n\r
    </string>\n\r
    <string name="title">史上最浅显易懂的Git教程！</string>

    <string name="data">
        {\"code\":200,\"message\":\"数据获取成功\",\"result\":[{\"order_id\":\"64\",\"price\":\"0.01\",\"order_sn\":\"201707111809105964a3c6c9239\",\"time\":\"2017-07-11 18:09:10\",\"goods_amount\":\"0.01\",\"fee\":\"0.00\",\"num\":\"1\",\"status\":\"0\",\"pay_status\":\"1\",\"goodslist\":[{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"}]},{\"order_id\":\"63\",\"price\":\"0.01\",\"order_sn\":\"201707111806545964a33e652c0\",\"time\":\"2017-07-11 18:06:54\",\"goods_amount\":\"0.01\",\"fee\":\"0.00\",\"num\":\"1\",\"status\":\"0\",\"pay_status\":\"0\",\"goodslist\":[{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"},{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"}]},{\"order_id\":\"62\",\"price\":\"0.01\",\"order_sn\":\"201707111804125964a29c26f93\",\"time\":\"2017-07-11 18:04:12\",\"goods_amount\":\"0.01\",\"fee\":\"0.00\",\"num\":\"1\",\"status\":\"0\",\"pay_status\":\"1\",\"goodslist\":[{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"},{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"},{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"}]},{\"order_id\":\"61\",\"price\":\"0.01\",\"order_sn\":\"201707111802155964a22749b60\",\"time\":\"2017-07-11 18:02:15\",\"goods_amount\":\"0.01\",\"fee\":\"0.00\",\"num\":\"1\",\"status\":\"0\",\"pay_status\":\"1\",\"goodslist\":[{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"},{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"}]},{\"order_id\":\"60\",\"price\":\"0.01\",\"order_sn\":\"2017071117402559649d09f1895\",\"time\":\"2017-07-11 17:40:25\",\"goods_amount\":\"0.01\",\"fee\":\"0.00\",\"num\":\"1\",\"status\":\"0\",\"pay_status\":\"1\",\"goodslist\":[{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"}]},{\"order_id\":\"59\",\"price\":\"0.01\",\"order_sn\":\"2017071117350259649bc63a59e\",\"time\":\"2017-07-11 17:35:02\",\"goods_amount\":\"0.01\",\"fee\":\"0.00\",\"num\":\"1\",\"status\":\"0\",\"pay_status\":\"0\",\"goodslist\":[{\"gid\":\"18\",\"gname\":\"Air Jordan 12 Low AJ12 狼灰 麂皮 308317 308305-002\",\"attr_name\":\"黄色|29\",\"num\":\"1\",\"price\":\"0.01\",\"total\":\"0.01\"}]}]}
    </string>

    <string name="database">data test</string>

    <string name="_lease_open_permissions">请打开权限</string>
    <string name="choose_wallpaper">关闭动态壁纸</string>

</resources>

原作者github地址:https://github.com/songixan/Wallpaper

我的github地址:https://github.com/dyf505776897/dyfkotlindemo 欢迎star 共同进步学习探讨

原文链接：http://www.apkbus.com/blog-535369-68399.html