OcrDemo/app/src/main/java/com/miekir/ocr/MainActivity.java

package com.miekir.ocr;

import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import com.tbruyelle.rxpermissions2.RxPermissions;


/**
 *
 * @author 詹子聪
 * @date 2020/7/25 20:33
 * Description: 主界面
 */
public class MainActivity extends AppCompatActivity {
    @SuppressLint("CheckResult")
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final RxPermissions rxPermissions = RxPermissions.getInstance(this);
        rxPermissions
                .request(Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE)
                .subscribe(granted -> {
                    if (granted) {
                        // 打开相机
                        //startActivity(new Intent(MainActivity.this, CropImageActivity.class));

                        startActivity(new Intent(MainActivity.this, CameraActivity.class));
                        finish();
                        //photoSelect();
                    } else {
                        // 权限被拒绝
                        showDenyDialog();
                    }
                });



    }

    protected void showDenyDialog() {
        AlertDialog dialog = new AlertDialog
                .Builder(this)
                .setMessage("Camera or Storage Permissions Denied")
                .setPositiveButton("Confirm", (dialogInterface, i) -> {
                    finish();
                }).create();
        dialog.show();
    }


    /**
     * 打开相册
     */
    private void photoSelect() {
        /*Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        intent.setType("image/jpeg");
        RxActivityResult.on(this)
                .startIntent(intent)
                .filter(result -> result.data() != null)
                .map(result -> result.data().getData())
                .doOnNext(this::getUri)
                .subscribe();*/
    }

    private void getUri(Uri uri) {
        /*cropImageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                cropImageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                //自定义裁剪-全屏的裁剪
                Bitmap.Config conf = Bitmap.Config.ARGB_8888; // see other conf types
                Bitmap bitmap = Bitmap.createBitmap(cropImageView.getWidth(), cropImageView.getHeight(), conf);
                cropImageView.setImageBitmap(bitmap);
            }
        });*/
    }
}