EDIT: Thank you all for your help. I edited my Database class to contain the following
final EditText firstName = (EditText) findViewById(R.id.editText1); // First Name
final EditText middleName = (EditText) findViewById(R.id.editText2); // Middle Name
final EditText birthDate = (EditText) findViewById(R.id.editText4); // Birth Date
final String firstname = firstName.getText().toString(); // First Name
final String middlename = middleName.getText().toString(); // Middle Name
final String birthdate = birthDate.getText().toString(); // Birth Date
TextView firstNameText = (TextView)findViewById(R.id.firstname);
TextView middleNameText = (TextView)findViewById(R.id.middlename);
TextView birthDateText = (TextView)findViewById(R.id.birthdate);
firstNameText.setText(firstname);
middleNameText.setText(middlename);
birthDateText.setText(birthdate);
and my database.xml now shows
<TableRow
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:background="#aa0000"
android:gravity="center_horizontal"
android:layout_span="3"
android:id="@+id/firstname"/>
<TextView
android:background="#00aa00"
android:gravity="center_horizontal"
android:layout_span="3"
开发者_如何学Go android:id="@+id/middlename"/>
<TextView
android:background="#0000aa"
android:gravity="center_horizontal"
android:layout_span="3"
android:id="@+id/birthdate"/>
</TableRow>
but when I run the emulator and I try to access that screen (by clicking a button from the previous screen) the application crashes? I set up the button correctly using the OnClickListener so I'm fairly sure the button is not the problem
If you're having trouble understanding the interface here's an example you can cut and paste.
main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="First Name: "
android:id="@+id/firstLabel"
android:layout_marginTop="14dip"
android:layout_marginBottom="14dip"
/>
<EditText android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/firstEdit"
android:text="John"
android:layout_toRightOf="@id/firstLabel"
android:layout_alignParentRight="true"></EditText>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Middle Name: "
android:id="@+id/middleLabel"
android:layout_below="@id/firstLabel"
android:layout_marginTop="14dip"
android:layout_marginBottom="14dip"/>
<EditText android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/middleEdit"
android:text="Phillip"
android:layout_below="@id/firstEdit"
android:layout_toRightOf="@id/middleLabel"
android:layout_alignParentRight="true"></EditText>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Last Name: "
android:id="@+id/lastLabel"
android:layout_below="@id/middleLabel"
android:layout_marginTop="14dip"
android:layout_marginBottom="14dip"
/>
<EditText android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/lastEdit"
android:text="Doe"
android:layout_below="@id/middleEdit"
android:layout_toRightOf="@id/lastLabel"
android:layout_alignParentRight="true"></EditText>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Birthdate: "
android:id="@+id/birthLabel"
android:layout_below="@id/lastLabel"
android:layout_marginTop="14dip"
android:layout_marginBottom="14dip"
/>
<EditText android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/birthEdit"
android:text="08/09/1977"
android:layout_toRightOf="@id/lastLabel"
android:layout_below="@id/lastEdit"
android:layout_alignParentRight="true"></EditText>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_below="@id/birthEdit">
<TableRow
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<TextView
android:background="#aa0000"
android:gravity="center_horizontal"
android:layout_span="3"
android:text="something"
android:id="@+id/firstTable"/>
<TextView
android:background="#00aa00"
android:gravity="center_horizontal"
android:layout_span="3"
android:text="something1"
android:id="@+id/middleTable"/>
<TextView
android:background="#0000aa"
android:gravity="center_horizontal"
android:layout_span="3"
android:text="something2"
android:id="@+id/birthTable"/>
</TableRow>
</LinearLayout>
</RelativeLayout>
DatabaseExample.java
import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;
public class DatabaseExample extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//Setup edit fields
EditText firstEdit = (EditText)findViewById(R.id.firstEdit);
EditText middleEdit = (EditText)findViewById(R.id.middleEdit);
EditText lastEdit = (EditText)findViewById(R.id.lastEdit);
EditText birthEdit = (EditText)findViewById(R.id.birthEdit);
//Get the text and store in variables
String firstName = firstEdit.getText().toString();
String middleName = middleEdit.getText().toString();
String lastName = lastEdit.getText().toString();
String birthDate = birthEdit.getText().toString();
//setup the text fields
TextView firstTable = (TextView)findViewById(R.id.firstTable);
TextView middleTable = (TextView)findViewById(R.id.middleTable);
TextView birthTable = (TextView)findViewById(R.id.birthTable);
//change the text fields
firstTable.setText(firstName);
middleTable.setText(middleName);
birthTable.setText(birthDate);
}
}
Once again this would be just the interface for inputting and displaying data. Instead of storing the data in String variables you would use SQLite, SharedPreferences, or write to a file on the SDCard.
Try as follows
final EditText firstName = (EditText) findViewById(R.id.editText1);
TextView firstNameTxt = (TextView)findViewById(R.id.firstname);
firstNameTxt.setText(firstName);
You cannot store values from the user in the strings.xml file. You must have a data store such as SharedPreferences or SQLite. Here is another link for help on data storage with Android.
精彩评论