最近公司需要一个android拍照上传和定位功能的的单一功能页面，一开始选择ionic cordova angular的一套H5框架，但是遇到和上传文件报错的问题，bug找了一天没找到原因，怀疑是ionic版本问题，但是不重要了，不过有想继续研究问题的代码给你们，加油呀
git@github.com:tsxylhs/ionic-image-upload.git
因为赶的急临时抱佛脚，一天的时间将android入门然后写了这个Demo 希望大家共同学习，全栈就得有个全栈的样子你说对不，现在说正事
首先是定位， gps定位和网络定位，动态获取权限卡了一会，贴代码瞧瞧吧，写惯了golang 再写java感觉太臃肿了。。太臃肿了。。。。。臃肿。。。。了
System.out.println("获取经纬度");
showGPSContacts();
哈哈哈是是不是觉得我在逗你们，这个就是click里的方法了。实现showGpsContacts,根据多年菜逼的经验代码不要乱写，会更乱，放在类里调用就好了，上核心代码
public void showGPSContacts() { LocationManager lm = (LocationManager) MainActivity.this.getSystemService(Context.LOCATION_SERVICE); boolean ok = lm.isProviderEnabled(LocationManager.GPS_PROVIDER); if (ok) {//开了定位服务 if (Build.VERSION.SDK_INT >= 23) { //判断是否为android6.0系统版本，如果是，需要动态添加权限 if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {// 没有权限，申请权限。 ActivityCompat.requestPermissions(MainActivity.this, LOCATIONGPS, BAIDU_READ_PHONE_STATE); } else { getLocation();//getLocation为定位方法 } } else { getLocation();//getLocation为定位方法 } } else { Toast.makeText(MainActivity.this, "系统检测到未开启GPS定位服务,请开启", Toast.LENGTH_SHORT).show(); Intent intent = new Intent(); intent.setAction(Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(intent, PRIVATE_CODE); } } /** * 获取具体位置的经纬度 */ private void getLocation() { // 获取位置管理服务 LocationManager locationManager; String serviceName = Context.LOCATION_SERVICE; locationManager = (LocationManager) MainActivity.this.getSystemService(serviceName); // 查找到服务信息 Criteria criteria = new Criteria(); criteria.setAccuracy(Criteria.ACCURACY_FINE); // 高精度 criteria.setAltitudeRequired(false); criteria.setBearingRequired(false); criteria.setCostAllowed(true); criteria.setPowerRequirement(Criteria.POWER_LOW); // 低功耗 String provider = locationManager.getBestProvider(criteria, true); // 获取GPS信息 /**这段代码不需要深究，是locationManager.getLastKnownLocation(provider)自动生成的，不加会出错**/ if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { return; } Location location = locationManager.getLastKnownLocation(provider); // 通过GPS获取位置 updateLocation(location); } /** * 获取到当前位置的经纬度 * * @param location */ private void updateLocation(Location location) { if (location != null) { lat = location.getLatitude(); lng= location.getLongitude(); locationSuccess = new AlertDialog.Builder(MainActivity.this) .setTitle("提示信息")//标题 .setMessage("获取定位成功！")//内容 .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(MainActivity.this, "获取定位成功", Toast.LENGTH_SHORT).show(); dialog.dismiss(); } }).setIcon(R.mipmap.ic_launcher).create();//图标 locationSuccess.show(); System.out.println("lat"+lat+":"+"location"+lng); } else { System.out.println("获取失败"); locationError = new AlertDialog.Builder(MainActivity.this) .setTitle("定位失败")//标题 .setMessage("获取定位失败联系开发者：17615855621！")//内容 .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(MainActivity.this, "获取定位失败", Toast.LENGTH_SHORT).show(); dialog.dismiss(); } }).setIcon(R.mipmap.ic_launcher).create();//图标 locationError.show(); } } }
其实我也是从网上找的例子，读一读，看一看 control c v 拿过来，这个就是拿来主义
AndroidManifest.xml 引入权限
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
没有什么大毛病的话定位就走起了
接下来就是要拍照上传了这个说实话真耽误了一些功夫，没办法有拿来主义，就要有分享精神（哈哈）自吹自擂的话就不说了上代码
//设置图片的保存路径,作为全局变量 System.out.println("打开摄像头拍照"); intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(intent, PICK);
套路一样，逻辑分类些，就像是上海的垃圾分类，博主每天接收大妈的审问，我是什么垃圾，代码也一样，代码不分类也是和垃圾一样(丑呀)
重写
onActivityResult此方法
然后将
Bitmap 转换为文件 初步工作完成
@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case PICK: if (resultCode == RESULT_OK) { //将拍摄的照片显示出来 Bundle bundle = data.getExtras(); Bitmap bitmap = (Bitmap) bundle.get("data"); base64ImageData = bitmapToBase64(bitmap); imageView.setImageBitmap(bitmap); file= compressImage(bitmap); // 拍照完成并且显示完成 // todo 上传图片和位置信息 } break; default: break; } } //转换文件 public File compressImage(Bitmap bitmap) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);//质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baos中 int options = 100; SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss"); Date date = new Date(System.currentTimeMillis()); String filename = format.format(date); File file = new File(Environment.getExternalStorageDirectory(), filename + ".png"); try { FileOutputStream fos = new FileOutputStream(file); try { fos.write(baos.toByteArray()); fos.flush(); fos.close(); } catch (IOException e) { e.printStackTrace(); } } catch (FileNotFoundException e) { e.printStackTrace(); } return file; }
上传有点乱将就吧，天不早该睡觉了,有些业务上的逻辑请忽略
System.out.println("上传图片");
address = editTextAddress.getText().toString();
deviceId = editTextDeviceId.getText().toString();
System.out.println("address:" + address);
if (address==""||deviceId==""||lng==0.0||lat==0.0) {
alertDialog1 = new AlertDialog.Builder(MainActivity.this)
.setTitle("错误")//标题
.setMessage("内容未完善！")//内容
.setPositiveButton("重新完善内容", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "重新完善内容", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
}).setIcon(R.mipmap.ic_launcher).create();//图标
alertDialog1.show();
} else {
new Thread(new Runnable() {
@Override
public void run() {
OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
RequestBody fileBody = RequestBody.create(MediaType.parse("image/png"), file);
RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM)
.addFormDataPart("file", deviceId, fileBody)
.addFormDataPart("address", address)
.addFormDataPart("deviceId", deviceId)
.addFormDataPart("latlong", lat + ":" + lng).build();
Request request = new Request.Builder().url(url).post(requestBody).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(@NotNull Call call, @NotNull IOException e) {
Log.i("response:", e.toString());
Looper.prepare();
AlertFailure= new AlertDialog.Builder(MainActivity.this)
.setTitle("上传失败")//标题
.setMessage("上传失败请联系开发者:17615855621！")//内容
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "上传失败", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
}).setIcon(R.mipmap.ic_launcher).create();//图标
AlertFailure.show();
Looper.loop();
System.out.println(e.getMessage());
}
@Override
public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
Log.i("response:", response.toString());
Looper.prepare();
AlerDialogsuccess= new AlertDialog.Builder(MainActivity.this)
.setTitle("上传成功")//标题
.setMessage("上传成功！")//内容
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "上传成功", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
}).setIcon(R.mipmap.ic_launcher).create();//图标
AlerDialogsuccess.show();
Looper.loop();
System.out.println("上传成功");
}
});
}
}).start();
}
AndroidManifest.xml 引入权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
至此便大获全胜。本教程只适合1天android工龄人查看，大神请绕路行驶，以免发生车祸
页面要不要贴。。。。。不贴了吧都是拖出来的毫无美感可言
最后源代码来啦请注意查收：
https://github.com/tsxylhs/android-image-upload
谢谢，欢迎留言交流