android+studio照相机调用

可以使用Android Studio中的Camera API来调用照相机。以下是调用照相机的步骤：

1. 在AndroidManifest.xml文件中添加相机权限：

<uses-permission android:name="android.permission.CAMERA" />

2. 在布局文件中添加一个按钮，用于触发照相机：

<Button
    android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Take a photo" />

3. 在Activity中添加以下代码：

private static final int REQUEST_IMAGE_CAPTURE = 1;
private Button mButton;

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

    mButton = findViewById(R.id.button);
    mButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dispatchTakePictureIntent();
        }
    });
}

private void dispatchTakePictureIntent() {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        // Do something with the imageBitmap
    }
}

4. 运行应用程序并单击按钮以调用照相机。