我需要更改文本视图，然后应用程序应该启动其他进程，但是会发生什么，然后进行工作并最后更改文本。
我很感激任何建议！
public void onClick(View view) {
setText();
work();
}
我试过了
更多信息
完整代码
public class VehicleInspection extends Activity {
private RadioGroup radioQ1Group;
private RadioButton radioQ1Button;
private Button btnDisplay;
EditText registration;
EditText odometer;
EditText comment;
CheckBox Check1;
CheckBox Check2;
CheckBox Check3;
CheckBox Check4;
double latitude;
double longitude;
int go = 0;
// GPSTracker Variables
GPSTracker gps;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.activity_vehicle);
registration = (EditText) findViewById(R.id.editRegistration);
odometer = (EditText) findViewById(R.id.editOdometer);
comment = (EditText) findViewById(R.id.editComment);
SharedPreferences sharedPref= getSharedPreferences("mypref", 0);
String savedReg = sharedPref.getString("name", "");
registration.setText(savedReg);
Check1 = (CheckBox)findViewById(R.id.checkBox1);
Check2 = (CheckBox)findViewById(R.id.checkBox2);
Check3 = (CheckBox)findViewById(R.id.checkBox3);
Check4 = (CheckBox)findViewById(R.id.checkBox4);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
Button addImage = (Button) findViewById(R.id.buttonSendVehicle);
addImage.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
setText();
if (go==1)
{
work();
}
}
});
}
public void setText()
{
TextView tv = (TextView)findViewById(R.id.textComment);
tv.setText("IT WORKED!");
go = 1;
}
public void work()
{
AccountManager manager = (AccountManager) getSystemService(ACCOUNT_SERVICE);
Account[] list = manager.getAccounts();
String gmail = null;
String rating = null;
String scheck1 = "FAIL";
String scheck2 = "FAIL";
String scheck3 = "FAIL";
String scheck4 = "FAIL";
Float ratingf = null;
if(Check1.isChecked())
scheck1 = "PASS";
if(Check2.isChecked())
scheck2 = "PASS";
if(Check3.isChecked())
scheck3 = "PASS";
if(Check4.isChecked())
scheck4 = "PASS";
for(Account account: list)
{
if(account.type.equalsIgnoreCase("com.google"))
{
gmail = account.name;
break;
}
}
gps = new GPSTracker(VehicleInspection.this);
Mail m = new Mail("EMAIL@EMAIL", ");
String[] toArr = {"EMAIL@EMAIL"};
String message = ("From : " + gmail + "\n" + "Registration : " + registration.getText().toString() + "\n" + "Odometer : " + odometer.getText().toString() + "\nComment : " + comment.getText().toString());
message = message + "\nTires : " + scheck1 + "\nExterior : " + scheck2 + "\nWindows : " + scheck3 + "\nInterior : " + scheck4;
m.setFrom("EMAIL@EMAIL");
m.setSubject("Yellolog : VI -" + " " + registration.getText().toString());
m.setTo(toArr);
if(gps.canGetLocation()){
latitude = gps.getLatitude();
longitude = gps.getLongitude();
message = message + "\nLocation : \nLat : " + latitude + "\nLong : " + longitude;
m.setBody(message);
}else{
// can't get location
// GPS or Network is not enabled
// Ask user to enable GPS/network in settings
gps.showSettingsAlert();
}
try {
// m.addAttachment("/sdcard/filelocation");
if(m.send()|| latitude != 0.0) {
Toast.makeText(VehicleInspection.this, "Email was sent successfully.", Toast.LENGTH_LONG).show();
// Create object of SharedPreferences.
SharedPreferences sharedPref= getSharedPreferences("mypref", 0);
//now get Editor
SharedPreferences.Editor editor= sharedPref.edit();
//put your value
editor.putString("name", registration.getText().toString());
//commits your edits
editor.commit();
odometer.setText("");
comment.setText("");
Check1.setChecked(false);
Check2.setChecked(false);
Check3.setChecked(false);
Check4.setChecked(false);
TextView tv = (TextView)findViewById(R.id.textComment);
tv.setText("Comment");
} else {
Toast.makeText(VehicleInspection.this, "Email was not sent.", Toast.LENGTH_LONG).show();
}
} catch(Exception e) {
Toast.makeText(VehicleInspection.this, "There was a problem sending the email." + e, Toast.LENGTH_LONG).show();
Log.e("MailApp", "Could not send email",e );
}
}
}
进展!!
public void onClick(View view) {
tv.setText("IT WORKED!");
if(tv.getText().toString().equals("IT WORKED!")){
runThread();
}else{
Toast.makeText(VehicleInspection.this, "Text Didnt change yet", Toast.LENGTH_LONG).show();
}
}
});
}
private void runThread() {
new Thread() {
public void run() {
while (i++ < 1000) {
try {
runOnUiThread(new Runnable() {
@Override
public void run() {
work();
}
});
Thread.sleep(300);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}.start();
}
这会首先更改文本，然后发送电子邮件，但work（）方法在电子邮件发送后不会结束。
答案 0 :(得分：0)
尝试这样： -
addImage.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
TextView tv = (TextView)findViewById(R.id.textComment);
tv.setText("IT WORKED!");
if(tv.getText().toString().equals("IT WORKED!")){
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(1000);
work();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});thread.start();
}else{
//paste code for error
}
}
});
答案 1 :(得分：0)
public class my_asyntask extends AsyncTask<String, String, String> {
TextView tv = (TextView)findViewById(R.id.textComment);
protected void onPreExecute() {
//you can set first here your textview
}
@Override
protected String doInBackground(String... params) {
//do work in background
return null;
}
protected void onPostExecute(String string) {
//finally settext your textview
}
}
答案 2 :(得分：0)
尝试在setText（）方法中调用invalidate（）方法。
答案 3 :(得分：0)
尝试删除此条件while (i++ < 1000)并在runOnUiThread之前使用Thread.sleep(1000)。试试这样： -
private void runThread() {
new Thread() {
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
runOnUiThread(new Runnable() {
@Override
public void run() {
work();
}
});
}
}.start();
}