意图与额外

Question

我有一个上传活动，可以产生 3 个选项。 结果 1：数据上传成功。 结果 2：上传不成功。

上一个活动代码

protected void onPostExecute(String string1) {
super.onPostExecute(string1);
progressDialog.dismiss();
final Intent intent = new Intent(UploadActivity.this, SuccessActivity.class);
intent.putExtra("VAL1", string1);
startActivity(intent);
 } 
catch (Exception e) {
e.printStackTrace();
}

Mysql 结果代码

if(mysqli_query($con,$sql)){
       //Data To Be Uploaded.........
        echo "Your Data Was Successfully Uploaded. Thank You";
    }
    mysqli_close($con);
}else{ }

结果活动安卓

public class SuccessActivity extends AppCompatActivity {
TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.success_main);

Intent intent = getIntent();
Bundle extras = intent.getExtras();
String data = null;
String data2 = "Your Data Upload Was NOT Successfull!!";

if (getIntent()!= null && getIntent().getExtras() != null) {

       if (extras.getString("val1") != null) {
                data = extras.getString("val1");
                textView = findViewById(R.id.experiences);
                textView.setText(data);
            }
       else if(getIntent() != null && getIntent().getExtras() == null) {
                textView = findViewById(R.id.experiences);
                textView.setText(data2);
            }
       else if (getIntent() == null && getIntent().getExtras() == null){
                textView = findViewById(R.id.experiences);
                textView.setText(data2);
            }
        }

Answer 1

参考此： 如何从 Android 上的意图获取额外数据？

您额外的字符串“VAL1”不在捆绑包中。

将您的SuccessActivity代码更改为此并尝试：

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

    TextView textView = findViewById(R.id.experiences);

    String dataerror = "Your Data Upload Was NOT Successfull!!";

    Intent intent = getIntent();
    if(intent != null) {
        String data = intent.getStringExtra("VAL1"); //  Thats the right way to get the extra String;
        if(data != null && !data.isEmpty()) {
            textView.setText(data);
        } else {
            textView.setText(dataerror);
        }
    } else {
        textView.setText(dataerror);
    }
}