Android Studio：从相机拍摄照片后，可单击ImageView以全屏打开图像

Question

[当前，我具有相机功能，当我单击相机按钮时，它将拍摄照片并将其显示在ImageView中。现在，我要使ImageView可以单击，这意味着当单击时，它将以全屏方式打开图像。谁知道怎么做？

下面是我当前的代码

Java

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

        setTitle("Task Details");

        if (!SharedPrefManager.getInstance(this).isLoggedIn()) {
            finish();
            startActivity(new Intent(this, MainActivity.class));
        }

        TaskClass task = (TaskClass) getIntent().getExtras().getSerializable("task");

        tvTaskName = findViewById(R.id.tvTaskName);
        btnCamera = findViewById(R.id.btnCamera);
        imgAttach = findViewById(R.id.imgAttach);

        tvTaskName.setText(task.getTask_name());
        EnableRuntimePermission();

        btnCamera.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

                startActivityForResult(intent, 7);

            }
        });
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 7 && resultCode == RESULT_OK) {

            Bitmap bitmap = (Bitmap) data.getExtras().get("data");

            imgAttach.setImageBitmap(bitmap);
        }
    }

    public void EnableRuntimePermission(){

        if (ActivityCompat.shouldShowRequestPermissionRationale(TaskUpdate.this,
                Manifest.permission.CAMERA))
        {

            Toast.makeText(TaskUpdate.this,"CAMERA permission allows us to Access CAMERA app", Toast.LENGTH_LONG).show();

        } else {

            ActivityCompat.requestPermissions(TaskUpdate.this,new String[]{
                    Manifest.permission.CAMERA}, RequestPermissionCode);
        }
    }

    @Override
    public void onRequestPermissionsResult(int RC, String per[], int[] PResult) {

        switch (RC) {

            case RequestPermissionCode:

                if (PResult.length > 0 && PResult[0] == PackageManager.PERMISSION_GRANTED) {

                    Toast.makeText(TaskUpdate.this,"Permission Granted, Now your application can access CAMERA.", Toast.LENGTH_LONG).show();

                } else {

                    Toast.makeText(TaskUpdate.this,"Permission Canceled, Now your application cannot access CAMERA.", Toast.LENGTH_LONG).show();

                }
                break;
        }
    }

XML

<ImageView
    android:id="@+id/imgAttach"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:adjustViewBounds="true"
    android:paddingTop="05dp"
    android:paddingBottom="05dp"
    android:background="@drawable/imgborder"/>

Answer 1

创建另一个活动，例如ViewImage.java，在其布局文件中仅包含一个ImageView，然后在用户单击图像时打开该活动，并传递位图。为该ViewImage活动设置自定义样式，在您的情况下应为NoActionBar。在ViewImage活动中接收位图，并将其设置为您在布局文件中创建的imageView。