desc_permission_utils.md

Permission

源码 - Permission.java

一键权限请求工具，请求单个权限或多个权限，可选择两种回调用方式。

处理单个权限

@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
private Permission mPermission = Permission.newInstance(
    new Permission.SingleCallback() {
      @Override public void onGranted(int requestCode, String permission) {
        /* 权限通过 */
        Toast.makeText(self(), "granted permissions.", Toast.LENGTH_SHORT).show();
      }

      @Override public void onDenied(int requestCode, String permission) {
        /* 权限被拒绝 */
        Toast.makeText(self(), "denied permissions.", Toast.LENGTH_SHORT).show();
      }

      @Override public void onRationale(int requestCode, String permission) {
        Toast.makeText(self(), "we need permissions.", Toast.LENGTH_SHORT).show();
        /* 解释权限 */
        new AlertDialog.Builder(PermissionUtilsCallTest.this)
            .setPositiveButton("again", new DialogInterface.OnClickListener() {
              @Override public void onClick(DialogInterface dialog, int which) {
                /* 再次请求 */
                mPermission.checkAndRequest(self(), 1,
                    true, Manifest.permission.READ_EXTERNAL_STORAGE);
              }
            })
            .setNegativeButton("no", new DialogInterface.OnClickListener() {
              @Override public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(self(), "no", Toast.LENGTH_SHORT).show();
              }
            })
            .create()
            .show();
      }
    }
);

处理多个权限

private Permission mPermission = Permission.newInstance(
    new Permission.MultiCallBack() {
      @Override public void onGranted(int requestCode, String permission) {
        /* 每个通过的权限都会从这里回调 */
      }

      @Override public void onDenied(int requestCode, String permission) {
        /* 每个被拒绝的权限都会从这里回调 */
      }

      @Override public void onRationale(int requestCode, String permission) {
        /* 每个需要被解释的权限都会从这里回调 */
      }

      @Override public void onGrantedAll(int requestCode) {
        /* 全部权限通过 */
      }

      @Override public void onGrantedPart(int requestCode, Set<String> grantedPermissions) {
        /* 部分权限通过 */
      }
    });

1. 接管系统权限返回结果

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                     @NonNull int[] grantResults) {
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
    mPermissionUtils.onRequestPermissionsResult(requestCode, permissions, grantResults);
  }
}

2. 在生命周期方法里请求权限

@Override protected void onCreate(@Nullable Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
    mPermission.checkAndRequest(self(), 1, false,
        Manifest.permission.READ_EXTERNAL_STORAGE);
  }
}