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