完全錯誤Android的錯誤java.lang.NumberFormatException
FATAL EXCEPTION: main
Process: com.intent.explicitintent, PID: 9871
java.lang.NumberFormatException: For input string: "android.support.v7.widget.AppCompatEditText{c41d17d VFED..CL. ........ 80,80-400,148 #7f0d0075 app:id/numberOne}"
at java.lang.Integer.parseInt(Integer.java:521)
at java.lang.Integer.parseInt(Integer.java:556)
at com.intent.explicitintent.MainActivity.add(MainActivity.java:40)
at com.intent.explicitintent.MainActivity$1.onClick(MainActivity.java:28)
at android.view.View.performClick(View.java:5610)
at android.view.View$PerformClick.run(View.java:22265)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
我想添加簡單addition.But這是行不通的。 我有兩個EditText字段和一個Button。我想要顯示在另一個活動的結果,當按鈕被點擊的TextView
這裏是我的代碼
活動一。
public class MainActivity extends AppCompatActivity {
EditText oneNumber;
EditText secondNumber;
Button button;
int e;
int b;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
oneNumber = (EditText) findViewById(R.id.numberOne);
secondNumber = (EditText) findViewById(R.id.numberTwo);
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
add(v);
}
});
}
public void add(View view) {
int a = Integer.parseInt(String.valueOf(oneNumber));
int b = Integer.parseInt(String.valueOf(secondNumber));
int result = a + b;
Intent intent = new Intent();
intent.putExtra("add", result);
intent.setClass(MainActivity.this, AnotherActivity.class);
startActivity(intent);
}
}
次活動
public class AnotherActivity extends AppCompatActivity {
TextView total;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_another);
total = (TextView) findViewById(R.id.Total);
Bundle extras = getIntent().getExtras();
String result = extras.toString();
total.setText(result);
}
}
我想我搞砸了與EditText上得到整數和獲得的結果裏面TextView的另一個動作
任何幫助嗎?
'String.valueOf'是多餘的,如果你已經擁有了從'的toString)的字符串('。 –
同意...謝謝 – rafsanahmad007
仍然無法正常工作。在第二項活動中,我應該如何寫入號碼? – Mrkle