1、在项目res中的xml目录(没有的话新建一个就行)中新建file_path_my.xml
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path
name="external"
path="." />
<external-files-path
name="external_files"
path="." />
<cache-path
name="cache"
path="." />
<external-cache-path
name="external_cache"
path="." />
<files-path
name="files"
path="." />
<external-files-path name="my_images" path="Pictures/" />
</paths>2、在AndroidManifast.xml中静态申请相机权限，创建FileProvider
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" /> <!--申明是否必须拥有相机的设备才能安装本应用-->
<queries>
<intent>
<action android:name="android.media.action.IMAGE_CAPTURE" />
</intent>
</queries>
<application
...>
...
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_path_my" />
</provider>
</application>3.写一个弹窗用来选择获取图片的方式，是相机拍摄还是相册选择
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import androidx.annotation.NonNull;
public class SelectItemDialog extends Dialog {
BtnCallback btnCallback;
public SelectItemDialog(@NonNull Context context, BtnCallback btnCallback) {
super(context);
this.btnCallback=btnCallback;
}
CommonDialogSelectItemBinding binding;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding= CommonDialogSelectItemBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
setCanceledOnTouchOutside(true);
Window window = getWindow();
window.setBackgroundDrawableResource(android.R.color.transparent);
WindowManager.LayoutParams attributes = window.getAttributes();
attributes.gravity= Gravity.CENTER;
attributes.width= getWidth(getContext())*270/375;
binding.layoutSelectCapture.setOnClickListener(v -> {
if (btnCallback!=null){
btnCallback.select(binding.layoutSelectCapture.getId());
}
dismiss();
});
binding.layoutSelectPhoto.setOnClickListener(v -> {
if (btnCallback!=null){
btnCallback.select(binding.layoutSelectPhoto.getId());
}
dismiss();
});
}
public interface BtnCallback{
void select(int id);
}
public int getWidth(Context context) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics.widthPixels;
}
}
common_dialog_select_item.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="wrap_content"
android:orientation="vertical"
android:paddingLeft="@dimen/dp16"
android:paddingRight="@dimen/dp16"
android:paddingTop="10dp"
android:paddingBottom="4dp"
xmlns:app="http://schemas.android.com/apk/res-auto"
>
<RelativeLayout
android:id="@+id/layout_select_photo"
android:layout_marginTop="@dimen/dp17"
android:paddingLeft="@dimen/dp13"
android:paddingRight="@dimen/dp13"
android:paddingTop="@dimen/dp17"
android:paddingBottom="@dimen/dp17"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="从相册选择"
android:textColor="#ff464646"
android:textSize="@dimen/sp16"
/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/layout_select_capture"
android:layout_marginVertical="@dimen/dp17"
android:paddingLeft="@dimen/dp13"
android:paddingRight="@dimen/dp13"
android:paddingTop="@dimen/dp17"
android:paddingBottom="@dimen/dp17"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="相机拍照"
android:textColor="#ff464646"
android:textSize="@dimen/sp16"
/>
</RelativeLayout>
</LinearLayout>4.导入动态权限申请库（也可以原生实现）
implementation "cn.canfankeji:permission:1.0.2"5.具体界面
public class MyActivity extends AppCompatActivity {
PermissionGrantTool permissionGrantTool;
String[] permissions = new String[]{Manifest.permission.CAMERA};
ActivityResultLauncher<Intent> activityResultLauncherCardFront;
Uri idCardFrontUri = null;
File tempFrontFile = null;
...
@Override
private void onCreate(Bundle savedInstanceState) {
...
Map<String, String[]> map = new HashMap<>();
map.put("android.permission.CAMERA", new String[]{"相机拍照", "实名认证，拍照并上传驾驶证正反面图片"});
PermissionGrantTool.setPermissionMap(map);
permissionGrantTool = new PermissionGrantTool(this);
initCallBack();
binding.imgView1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new SelectItemDialog(MyActivity .this, id -> {
if (id == R.id.layout_select_capture) {
permissionGrantTool.startPermissionsMethod(permissions,
new PermissionGrantTool.PermissionsMethodCallback() {
@Override
public void granted() {
Intent intent = null;
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (intent.resolveActivity(getPackageManager()) != null){
// 创建临时文件用于存储拍摄的照片
tempFrontFile = createImageFile();
if (tempFrontFile != null) {
Uri imageUri = FileProvider.getUriForFile(getApplicationContext(),
getPackageName() + ".provider",
tempFrontFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
activityResultLauncherCardFront.launch(intent);
} else {
Log.i("", "intent photoFile is null");
}
} else {
Log.i("", "intent resolveActivity is null");
}
}
@Override
public void denied() {
}
});
} else {
Intent intent = null;
intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
activityResultLauncherCardFront.launch(intent);
}
}).show();
}
});
}
private void initCallBack() {
activityResultLauncherCardFront = registerForActivityResult(
new ActivityResultContracts.StartActivityForResult(),
new ActivityResultCallback<ActivityResult>() {
@Override
public void onActivityResult(ActivityResult o) {
try {
if (o.getResultCode() == RESULT_OK) {
Intent data = o.getData();
if (data != null && data.getData() != null) {
// 从相册选择
idCardFrontUri = data.getData();
Glide.with(MyActivity.this)
.load(idCardFrontUri)
.into(binding.imgView1);
} else if (tempFrontFile != null && tempFrontFile.exists()) {
// 相机拍摄
idCardFrontUri = FileProvider.getUriForFile(
getApplicationContext(),
getPackageName() + ".provider",
tempFrontFile);
Glide.with(MyActivity.this)
.load(idCardFrontUri)
.into(binding.imgView1);
}
}
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(MyActivity.this, "图片加载失败", Toast.LENGTH_SHORT).show();
}
}
});
}
private File createImageFile() {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = null;
try {
image = File.createTempFile(imageFileName, ".png", storageDir);
} catch (IOException e) {
throw new RuntimeException(e);
}
return image;
}
}