android-master.zip

package com.example.demo; import android.Manifest; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.widget.Button; import android.widget.ImageView; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; import java.io.File; import java.io.FileNotFoundException; public class MainActivity extends AppCompatActivity { private static final int CAMERA_CODE = 20; private static final int CROP_CODE = 19; private static final int RESULT_OK = -1; private String path; private Uri uri; private ImageView picture; private Button picker; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); permission(); init(); } private void init() { picture = findViewById(R.id.image_view); picker = findViewById(R.id.pick); //自定义的图片保存路径 path = getFilesDir().getPath() + "/icon.jpeg"; //uri用以存放android裁剪后自动保存的路径 //保存在公共区域 File uriFile = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); //UriUtils是关于路径的操作 uri = UriUtils.getUriForFile(this, uriFile); picker.setOnClickListener(v -> { Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); intent.putExtra(MediaStore.EXTRA_OUTPUT, uri); startActivityForResult(intent, CAMERA_CODE); }); } /** * 最新版startActivityForResult和onActivityResult已经不推荐使用 * */ @Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); Intent intent; if (requestCode == CAMERA_CODE) { intent = PhotoUtils.startPhotoZoom(uri, uri, 2000, 2000); startActivityForResult(intent, CROP_CODE); } if (requestCode == CROP_CODE) { new Thread(() -> { String outputPath = UriUtils.getFileAbsolutePath(this, uri); System.out.println(outputPath); }).start(); Bitmap bitmap = decodeUriAsBitmap(uri); picture.setImageBitmap(bitmap); PhotoUtils.save(bitmap, new File(path), Bitmap.CompressFormat.JPEG, false); } } private void permission() { int REQUEST_CODE_CONTACT = 101; String[] strPermissions = { Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA}; for (String strPermission : strPermissions) { if (checkSelfPermission(strPermission) != PackageManager.PERMISSION_GRANTED) { requestPermissions(strPermissions, REQUEST_CODE_CONTACT); } } } private Bitmap decodeUriAsBitmap(Uri uri) { Bitmap bitmap = null; try { // 先通过getContentResolver方法获得一个ContentResolver实例， // 调用openInputStream(Uri)方法获得uri关联的数据流stream // 把上一步获得的数据流解析成为bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri)); } catch (FileNotFoundException e) { e.printStackTrace(); return null; } return bitmap; } }