我有一种方法,我知道现在不是通过 rite 发送它们的最佳方法,但我将它们作为字符串发送并在接收方将它们转换为 Int,问题是当我进行转换时它会在我的手机上崩溃. 这就是我在发件人方面所拥有的:
public void sendMessage(View view) {
// Do something in response to button
Intent intent = new Intent(this, PayTracker.class);
// hourly wage send
EditText editText = (EditText) findViewById(R.id.hourly_wage);
String message1 = editText.getText().toString();
intent.putExtra(MESSAGE_1, message1);
// ot wage send
EditText editText1 = (EditText) findViewById(R.id.ot_wage);
String message2 = editText1.getText().toString();
intent.putExtra(MESSAGE_2, message2);
// hours per day send
EditText editText2 = (EditText) findViewById(R.id.hours_day);
String message3 = editText2.getText().toString();
intent.putExtra(MESSAGE_3, message3);
// start new activity
startActivity(intent);
这就是我正在接受的方面:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pay_tracker);
getActionBar().setDisplayHomeAsUpEnabled(true);
// Receive messages from options page
Intent intent = getIntent();
String message1 = intent.getStringExtra(Options.MESSAGE_1);
String message2 = intent.getStringExtra(Options.MESSAGE_2);
String message3 = intent.getStringExtra(Options.MESSAGE_3);
// convert string to integer
int HW = Integer.valueOf(message1);
int OTW = Integer.valueOf(message2);
int HPD = Integer.valueOf(message3);
我已经测试了所有内容及其导致应用程序崩溃的转换,我希望有人可以帮助我让它不会崩溃,或者给我一种全新的方式向我的第二个活动发送一个 int,即发送一个字符串并转换它。谢谢!
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在您的帮助下,这是我的新代码!
发送:
public void sendMessage(View view) {
// Do something in response to button
Intent intent = new Intent(this, PayTracker.class);
// Gather text from text boxes
EditText editText = (EditText) findViewById(R.id.hourly_wage);
EditText editText1 = (EditText) findViewById(R.id.ot_wage);
EditText editText2 = (EditText) findViewById(R.id.hours_day);
//Create String from text
String message1 = editText.getText().toString();
String message2 = editText1.getText().toString();
String message3 = editText2.getText().toString();
//Convert String to Int
int HW = 0, OTW = 0, HPD = 0;
try{
HW = Integer.valueOf(message1);
OTW = Integer.valueOf(message2);
HPD = Integer.valueOf(message3);
}
catch(NumberFormatException nfe){
//do something else here
//for e.g. initializing default values to your int variables
}
// Send Integers to PayTracker.java
intent.putExtra(MESSAGE_HW, HW);
intent.putExtra(MESSAGE_OTW, OTW);
intent.putExtra(MESSAGE_HPD, HPD);
// start new activity
startActivity(intent);
}
接收方:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pay_tracker);
getActionBar().setDisplayHomeAsUpEnabled(true);
// Receive messages from options page
Intent intent = getIntent();
int HW = intent.getIntExtra(Options.MESSAGE_HW, 0);
int OTW = intent.getIntExtra(Options.MESSAGE_OTW, 0);
int HPD = intent.getIntExtra(Options.MESSAGE_HPD, 0);
// set textview
TextView textView = (TextView) this.findViewById(R.id.yourpay);
textView.setText(String.valueOf(HW));
}