java - 注意 : MainActivity uses or overrides a deprecated API. 注意:使用 -Xlint:deprecation 重新编译以获取详细信息

Question

My Goal: To fix this error and be able to run my app without an error.

Error Message: Note:D:\Learning\app\src\main\java\com\example\learning\MainActivity.javauses or overrides a deprecated API. Note: Recompile with-Xlint:deprecation for details.

我在“构建输出”中收到以下错误。我试图解决这个问题，但每次尝试都不成功。我在 Stackoverflow 上找到了一些与此错误相关的问题，但它不符合我的需求，所以我决定问我自己的问题，希望有人能帮助我解决这个错误。

public class MainActivity extends AppCompatActivity {

static final int REQUEST_IMAGE_CAPTURE = 1;
String currentPhotoPath;
Button sendBtn;
EditText nameText;

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

    nameText = (EditText)findViewById(R.id.editText);
    sendBtn = (Button)findViewById(R.id.button2);

}

public void dispatchTakePictureIntent(){
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    try {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }catch (ActivityNotFoundException e){
        //dispaly error
    }
}

private File createImageFile() throws IOException{
    //Create an image file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    String imageFileName = " JPEG_" + timeStamp + "_";
    File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    File image = File.createTempFile(
            imageFileName, /* prefix */
            ".jpg",   /* suffix */
            storageDir     /* directory */
    );

    // Save a file: path for use with ACTION_VIEW intents
    currentPhotoPath = image.getAbsolutePath();
    return image;
}

public void onClick(View view){

    dispatchTakePictureIntent();

}


public void onClick2(View view) {

    SqlAdapter sqlAdapter = new SqlAdapter();

    try {
        Connection con = sqlAdapter.connectionclass();
        String query = "INSERT INTO dbo.Test(text) VALUES ('" + nameText.getText().toString() + "') ";
        Statement stmt = con.createStatement();
        stmt.executeUpdate(query);
    }
    catch (SQLException sqlException){
        Log.e("ERROR", sqlException.getMessage());
    }

}
}

提前致谢!

Answer 1

startActivityForResult(…) 在 AndroidX Activity (AppCompatActivity) 中被弃用。

他们在 ComponentActivity(AppCompatActivity 的基类)中创建了一个名为 registerForActivityResult(…) 的替代品，这应该会更好。

参见 my answer in another question和 documentation for registerForActivityResult(…) .