Android(安卓)向用户申请权限-适配的PermissionsDispatcher简单使用
16lz
2021-01-24
动态权限之前一直使用自己封装的,还有RxPermission和EasyPermission,今天简单尝试下PermissionsDispatcher
引入
implementation "org.permissionsdispatcher:permissionsdispatcher:4.5.0"annotationProcessor "org.permissionsdispatcher:permissionsdispatcher-processor:4.5.0"
使用的Activity上加上注解:@RuntimePermissions
使用权限的方法上添加注解:
多个权限@NeedsPermission({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE})
单个权限@NeedsPermission(Manifest.permission.CAMERA)
这里使用拍照并回显,涉及到两个权限:
@NeedsPermission({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE}) void showCamera() {//这个方法是由PermissionsDispatcher来调用的 Toast.makeText(this,"获取到需要的权限了",Toast.LENGTH_SHORT).show(); Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { String filename = new SimpleDateFormat("yyyyMMdd-HHmmss", Locale.CHINA).format(new Date()) + ".png"; File file = new File(Environment.getExternalStorageDirectory(), filename); mCurrentPhotoPath = file.getAbsolutePath(); takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file)); startActivityForResult(takePictureIntent, 0); } }
点击Make Project 菜单:
重写onRequestPermissionsResult方法:
@Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); TestActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults); }
调用:(这里调用,PermissionsDispatcher会动态申请权限,如果申请到了就会自动调用showCamera方法)
public void takePhoto(View view) { TestActivityPermissionsDispatcher.showCameraWithPermissionCheck(this); }
完成的activity代码如下:
@RuntimePermissionspublic class TestActivity extends AppCompatActivity { private ImageView mImageView; private String mCurrentPhotoPath; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_test); mImageView = findViewById(R.id.iv); StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder(); StrictMode.setVmPolicy(builder.build()); builder.detectFileUriExposure(); } public void takePhoto(View view) { TestActivityPermissionsDispatcher.showCameraWithPermissionCheck(this); } @NeedsPermission({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE}) void showCamera() { Toast.makeText(this,"获取到权限了",Toast.LENGTH_SHORT).show(); Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { String filename = new SimpleDateFormat("yyyyMMdd-HHmmss", Locale.CHINA).format(new Date()) + ".png"; File file = new File(Environment.getExternalStorageDirectory(), filename); mCurrentPhotoPath = file.getAbsolutePath(); takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file)); startActivityForResult(takePictureIntent, 0); } } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); TestActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); Logger.d(mCurrentPhotoPath); if (resultCode == RESULT_OK && requestCode == 0) { Glide.with(this) .load(mCurrentPhotoPath) .into(mImageView); } }}
效果图如下:
补充:
如果在用户拒绝了权限时需要给用户提示,需要保证两个方法的权限是一致的(个数和内容都相等),否则OnPermissionDenied对应的方法不会执行;
@NeedsPermission({Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}) void getFile() { //do something }//决绝了一个或者多个权限 @OnPermissionDenied({Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}) void showRecordDenied() { ToastUtils.showShort("拒绝将会影响到功能使用"); }
仅此记录,简单的动态申请拍照和访问外部存储权限,用来拍照并回显;
其他详细使用请参考:
PermissionsDispatcher
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