我试图使用editText收集来自activity_main.xml的数据输入，并在单击“提交”按钮时通过电子邮件将其从MainActivity.java输入。由于某种原因，单击提交按钮时不执行任何操作。任何帮助表示赞赏。谢谢。以下是我的代码：
这是我的activity_main.xml代码：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/background_light">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="@+id/questions"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
tools:context="com.example.android.stool.MainActivity">
<ImageView
android:id="@+id/logo"
android:layout_width="match_parent"
android:layout_height="@dimen/height"
android:layout_gravity="center_horizontal"
android:background="#303f9f"
android:contentDescription="@string/description"
android:paddingBottom="@dimen/padding"
android:paddingTop="@dimen/padding"
android:src="@drawable/logoconf" />
<EditText
android:id="@+id/presentationName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:hint="@string/presentation"
android:inputType="text" />
<EditText
android:id="@+id/date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:hint="@string/date"
android:inputType="date" />
<TextView
android:id="@+id/speaker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginStart="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:text="@string/speaker" />
<RatingBar
android:id="@+id/rating_bar1"
style="?android:attr/ratingBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:isIndicator="false"
android:numStars="5"
android:rating="0"
android:stepSize="1"
tools:ignore="RtlHardcoded" />
<TextView
android:id="@+id/rating_bar1_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
/>
<TextView
android:id="@+id/visuals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:text="@string/visuals" />
<RatingBar
android:id="@+id/rating_bar2"
style="?android:attr/ratingBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:isIndicator="false"
android:numStars="5"
android:rating="0"
android:stepSize="1"
tools:ignore="RtlHardcoded" />
<TextView
android:id="@+id/rating_bar2_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
/>
<TextView
android:id="@+id/useful"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:text="@string/useful" />
<RatingBar
android:id="@+id/rating_bar3"
style="?android:attr/ratingBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginStart="@dimen/margin"
android:isIndicator="false"
android:numStars="5"
android:rating="0"
android:stepSize="1" />
<TextView
android:id="@+id/rating_bar3_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
/>
<TextView
android:id="@+id/recommend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:text="@string/recommend" />
<RadioGroup
android:id="@+id/rg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginStart="@dimen/margin"
android:orientation="horizontal">
<RadioButton
android:id="@+id/yes_radio_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/y"
android:textAppearance="?android:textAppearanceMedium" />
<RadioButton
android:id="@+id/no_radio_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/n"
android:textAppearance="?android:textAppearanceMedium" />
</RadioGroup>
<EditText
android:id="@+id/suggestions"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin"
android:layout_marginRight="@dimen/margin"
android:layout_marginTop="@dimen/margin"
android:hint="@string/suggestions"
android:inputType="textMultiLine" />
</LinearLayout>
<TextView
android:id="@+id/review_summary_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Summary"
android:textSize="16sp"
android:textColor="@android:color/black"
android:layout_marginLeft="8dp"
android:paddingTop="16dp"
android:paddingBottom="16dp"
/>
<Button
android:id="@+id/submit_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="@+id/questions"
android:layout_centerHorizontal="true"
android:layout_marginBottom="@dimen/button_margin"
android:onClick="submit"
android:text="@string/submit" />
</RelativeLayout>
</ScrollView>
这是我的MainActivity.java代码：
package com.example.android.stool;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.Toast;
import java.text.DecimalFormat;
public class MainActivity extends AppCompatActivity {
EditText presentationName;
EditText date;
RatingBar rating_bar1;
RatingBar rating_bar2;
RatingBar rating_bar3;
RadioButton yes;
RadioButton no;
EditText suggestions;
private ImageView imageView;
private EditText editText;
private EditText dateText;
private TextView textView;
private RatingBar ratingBar1;
private TextView rating_bar1_result;
private TextView rating_bar2_result;
private TextView rating_bar3_result;
private TextView visualsText;
private RatingBar ratBar;
private TextView usefulText;
private RatingBar ratiBar;
private TextView recommendText;
private RadioGroup radioGroup;
private RadioButton yesButton;
private RadioButton noButton;
private EditText suggestText;
private Button submitButton;
private String str;
int count;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submitButton = (Button) findViewById(R.id.submit_button);
coolLogo = (ImageView) findViewById(R.id.logo);
nameField = (EditText) findViewById(R.id.presentationName);
recDay = (EditText) findViewById(R.id.date);
comCat = (TextView) findViewById(R.id.speaker);
rating_bar1 = (RatingBar) findViewById(R.id.rating_bar1);
rating_bar1_result = (TextView) findViewById(R.id.rating_bar1_result);
graPhics = (TextView) findViewById(R.id.visuals);
rating_bar2 = (RatingBar) findViewById(R.id.rating_bar2);
rating_bar2_result = (TextView) findViewById(R.id.rating_bar2_result);
advAnt = (TextView) findViewById(R.id.useful);
rating_bar3 = (RatingBar) findViewById(R.id.rating_bar3);
rating_bar3_result = (TextView) findViewById(R.id.rating_bar3_result);
menDar = (TextView) findViewById(R.id.recommend);
yesButton = (RadioButton) findViewById(R.id.yes_radio_button);
noButton = (RadioButton) findViewById(R.id.no_radio_button);
sugGest = (EditText) findViewById(R.id.suggestions);
}
submitButton.setOnClickListener(new View.OnClickListener()
{
public void onClick (View v){
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto: example@gmail.com")); // only email apps should handle this
intent.putExtra(Intent.EXTRA_SUBJECT, "Presentation Review for: " + name);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
displayMessage(priceMessage);
});
}
private String reviewOrderSummary(String cool, String name, String rec, String com, boolean rating_bar1_result, String gra, boolean rating_bar2_result, String adv, boolean rating_bar3_result, String men, boolean selectedId, String sug) {
String priceMessage = "Logo: " + cool;
priceMessage += "\nName of Presentation: " + name;
priceMessage += "\nDate: " + rec;
priceMessage += "\nQuestion: " + com;
priceMessage += "\nPerformance: " + rating_bar1_result;
priceMessage += "\nQuestion: " + gra;
priceMessage += "\nVisual: " + rating_bar2_result;
priceMessage += "\nQuestion: " + adv;
priceMessage += "\nUseful Information: " + rating_bar3_result;
priceMessage += "\nQuestion: " + men;
priceMessage += "\nAnswer: " + selectedId;
priceMessage += "\nSuggestion: " + sug;
priceMessage += "\nThank you!";
return priceMessage;
}
//displays Logo
private void displayImage(View ImageView) {
ImageView coolLogo = (ImageView) findViewById(R.id.logo);
coolLogo.setImageResource(R.drawable.logoconf);
String cool = coolLogo.getRootView().toString();
if(Build.VERSION.SDK_INT >=Build.VERSION_CODES.JELLY_BEAN_MR1)
{
// ImageView.getDisplay();
coolLogo.getDisplay();
}
}
//displays Presentation Name
private void displayText(String name) {
EditText nameField = (EditText) findViewById(R.id.presentationName);
name = nameField.getText().toString();
if(name.equals(""))
{
Toast.makeText(getApplicationContext(), "Please type the Name of the Presentation!", Toast.LENGTH_SHORT).show();
}
else
{
// EditText.setText(name);
nameField.setText(name);
}
}
//displays Date
private void displayDate(String rec) {
EditText recDay = (EditText) findViewById(R.id.date);
rec = recDay.getText().toString();
if(rec.equals(""))
{
Toast.makeText(getApplicationContext(), "Please type in Today's Date!", Toast.LENGTH_SHORT).show();
} else
{
// EditText.setText(name);
recDay.setText(rec);
}
}
//displays How would you rate the speaker's TextView
private void displaySpeaker(String com) {
TextView comCat = (TextView) findViewById(R.id.speaker);
com = comCat.setText().toString();
// TextView.setText(com);
comCat.setText(com);
}
//displays the Rating Bar1 below speaker's TextView
void RatingUpdate() {
rating_bar1.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
rating_bar1_result.setText("Rating: " + String.valueOf(Math.round(rating)));
}
});
}
//displays how helpful were the visuals TextView
private void displayVisuals(String gra) {
TextView graPhics = (TextView) findViewById(R.id.visuals);
gra = graPhics.getText().toString();
// TextView.setText(gra);
graPhics.setText(gra);
}
//displays the Rating Bar below visuals TextView
void RatingUpdate2() {
rating_bar2.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
rating_bar2_result.setText("Rating: " + String.valueOf(Math.round(rating)));
}
});
}
//displays useful TextView
private void displayVisuals(String adv) {
TextView advAnt = (TextView) findViewById(R.id.useful);
adv = advAnt.getText().toString();
// TextView.setText(adv);
advAnt.setText(adv);
}
//displays the Rating Bar below useful TextView
void RatingUpdate3() {
rating_bar3.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
rating_bar3_result.setText("Rating: " + String.valueOf(Math.round(rating)));
}
});
}
//displays recommend TextView
private void displayRecommend(String men) {
TextView menDar = (TextView) findViewById(R.id.recommend);
men = menDar.getText().toString();
// TextView.setText(men);
menDar.setText(men);
//checks radiobutton for recommend TextView
int selectedId = radioGroup.getCheckedRadioButtonId();
if(selectedId ==-1)
{
Toast.makeText(getApplicationContext(), "Please choose one!", Toast.LENGTH_SHORT).show();
}
else
{
yesButton = (RadioButton) findViewById(selectedId);
if (yesButton.getId() == R.id.yes_radio_button) {
}
noButton = (RadioButton) findViewById(selectedId);
if (noButton.getId() == R.id.no_radio_button) {
}
}
}
//displays additional suggestions
private void displaySuggestions(String sug) {
EditText sugGest = (EditText) findViewById(R.id.suggestions);
sug = sugGest.getText().toString();
if(sug.equals(""))
{
Toast.makeText(getApplicationContext(), "Please type in your suggestions!", Toast.LENGTH_SHORT).show();
}
else
{
// EditText.setText(name);
sugGest.setText(sug);
}
Toast.makeText(
getApplicationContext(), "Thanks for filling this survey!",Toast.LENGTH_LONG).
show();
}
/**
* This method displays the given review text on the screen.
*/
private void displayMessage(String message) {
TextView reviewSummaryTextView = (TextView) findViewById(R.id.review_summary_text_view);
reviewSummaryTextView.setText(message);
}
}
我的错误代码如下：
对于以下代码，在=号之前的所有名称均为红色。因此，coolLogo为红色，nameField为红色，recDay为红色，comCat为红色，graPhics为红色，advAnt为红色，menDar为红色，sugGest为红色。
coolLogo = (ImageView) findViewById(R.id.logo);
nameField = (EditText) findViewById(R.id.presentationName);
recDay = (EditText) findViewById(R.id.date);
comCat = (TextView) findViewById(R.id.speaker);
graPhics = (TextView) findViewById(R.id.visuals);
advAnt = (TextView) findViewById(R.id.useful);
menDar = (TextView) findViewById(R.id.recommend);
sugGest = (EditText) findViewById(R.id.suggestions);
对于下面的代码，setOnClickListener为红色，v为红色，名称为红色，priceMessage为红色，以及）；是红色的。
submitButton.setOnClickListener(new View.OnClickListener()
{
public void onClick (View v){
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto: example@gmail.com")); // only email apps should handle this
intent.putExtra(Intent.EXTRA_SUBJECT, "Presentation Review for: " + name);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
displayMessage(priceMessage);
});
}
我希望能够收集徽标，日期，问题和答案，并将其通过电子邮件发送至example@gmail.com。
答案 0 :(得分：0)
更新1：
至少，通过这种方式，您可以显示您的消息。
clearInterval方法。删除其中之一。 =>
actualNumber = 0;
interval = null;
addingNumber(time: number) {
if (this.interval === null) {
this.interval = setInterval(() => this.actualNumber++, time);
}
}
stopAddingNumber() {
if (this.interval !== null) {
clearInterval(this.interval);
this.interval = null;
}
}
displayVisuals(String gra)方法中将setText（）更改为getText（）。=>
//displays how helpful were the visuals TextView
private void displayVisuals(String gra) {
TextView graPhics = (TextView) findViewById(R.id.visuals);
gra = graPhics.getText().toString();
// TextView.setText(gra);
graPhics.setText(gra);
}
displaySpeaker()方法和private void displaySpeaker(String com) {
TextView comCat = (TextView) findViewById(R.id.speaker);
com = comCat.getText().toString();
// TextView.setText(com);
comCat.setText(com);
}
。添加此内容：=>
onCreate()您可以构建此代码吗？我认为它不能被编译。 您必须将值设置为实例，而不是类本身！
submitButton.setOnClickListener ~