我的第一个第一个活动是插入数据，然后转到第二个活动 第二个活动使用“A”更新插入的行，然后转到第三个活动 现在，....第三个活动活动使用 B 更新同一行....但是此活动在闪存和第二个活动再次打开后关闭，并且除了具有不同数字的PID之外没有显示任何内容每次和 SIG：9 ，每次都相同.......更新和插入的代码在这里
public boolean updateForm1(String fake,String Res, String Gen,String rooms){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues =new ContentValues();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
if(Objects.equals(fake, "A")){
contentValues.put(CoL_4,Res);
contentValues.put(CoL_5,Gen);
contentValues.put(CoL_6,rooms);
db.update(TABLE_NAME,contentValues, "Residence = ?",new String[] { fake });
db.close();}
else if(Objects.equals(fake, "B")){
contentValues.put(CoL_7,Res);
contentValues.put(CoL_8,Gen);
db.update(TABLE_NAME,contentValues, "Construction = ?",new String[] { fake });
db.close();
}
}
return true;
}
public boolean insertData (String lat,String lng){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues =new ContentValues();
contentValues.put(CoL_2,lat);
contentValues.put(CoL_3,lng);
contentValues.put(CoL_4,"A");
contentValues.put(CoL_7,"B");
long res =db.insert(TABLE_NAME,null,contentValues);
db.close();
return res != -1;
}
在主要活动中，此功能正在插入
private void goToLocationZoom(double lat, double lng, float zoom) {
LatLng ll = new LatLng(lat, lng);
CameraUpdate update = CameraUpdateFactory.newLatLngZoom(ll, zoom);
mGoogleMap.moveCamera(update);
}
Marker marker;
public void Tag(View view) {
MarkerOptions options = new MarkerOptions()
.position(new LatLng(lat, lng))
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
marker = mGoogleMap.addMarker(options);
boolean isInserted = myDb.insertData(Double.toString(lat), Double.toString(lng));
if (isInserted == true) {
Toast.makeText(MainActivity.this, "Data Inserted", Toast.LENGTH_LONG).show();
} else
{Toast.makeText(MainActivity.this, "Data not Inserted", Toast.LENGTH_LONG).show();}
intent =new Intent (this,Form1Activity.class);
startActivity(intent);
}
Second Activityyyyyy是heeeeeee .......
public class Form1Activity extends AppCompatActivity {
private static RadioGroup radioGroup1,radioGroup2;
private static RadioButton Gr1Option,Gr2Option;
private static Button Enter;
DatabaseHelper myDbForm1;
private EditText Ed1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_form1);
Enter();
}
public void Enter(){
myDbForm1 = new DatabaseHelper(this);
radioGroup1 = (RadioGroup) findViewById(R.id.RG1);
radioGroup2 = (RadioGroup) findViewById(R.id.RG2);
Enter= (Button) findViewById(R.id.enter1);
Enter.setOnClickListener(new View.OnClickListener() {
@SuppressLint("WrongViewCast")
@Override
public void onClick(View v) {
int selected1 =radioGroup1.getCheckedRadioButtonId();
int selected2 =radioGroup2.getCheckedRadioButtonId();
Gr1Option= (RadioButton) findViewById(selected1);
Gr2Option= (RadioButton) findViewById(selected2);
Ed1= (EditText) findViewById(R.id.editText1);
if(Gr1Option== null || Gr2Option== null || Ed1==null )
{
Toast.makeText(Form1Activity.this,"Select one of the options", Toast.LENGTH_SHORT).show();
}
else {
String a=Gr1Option.getText().toString();
String b=Gr2Option.getText().toString();
String c=Ed1.getText().toString();
boolean isInserted = myDbForm1.updateForm1("A",a,b,c);
if (isInserted) {
Toast.makeText(Form1Activity.this, "Data of form1 Inserted", Toast.LENGTH_LONG).show();
} else
{Toast.makeText(Form1Activity.this, "Data of form1 not Inserted", Toast.LENGTH_LONG).show();}
Toast.makeText(Form1Activity.this, Gr1Option.getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(Form1Activity.this, Gr2Option.getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(Form1Activity.this, Ed1.getText().toString(), Toast.LENGTH_LONG).show();
}
}
});
}
public void Next(View view){
if(Gr1Option== null || Gr2Option== null|| Ed1==null )
{
Toast.makeText(Form1Activity.this,"Select one of the options and press Enter", Toast.LENGTH_SHORT).show();
}
else {
Intent intent =new Intent(Form1Activity.this,Form2Activity.class);
startActivity(intent);
}
}
}
第二次更新行的第三个活动.............
public class Form2Activity extends AppCompatActivity {
private static RadioGroup radioGroup21,radioGroup22;
private static RadioButton Gr21Option,Gr22Option;
private static Button Enter2;
DatabaseHelper myDbForm2;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_form2);
Enter2();
}
public void Enter2(){
radioGroup21 = (RadioGroup) findViewById(R.id.RG21);
radioGroup22 = (RadioGroup) findViewById(R.id.RG22);
Enter2= (Button) findViewById(R.id.enter2);
Enter2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int selected1 =radioGroup21.getCheckedRadioButtonId();
int selected2 =radioGroup22.getCheckedRadioButtonId();
Gr21Option= (RadioButton) findViewById(selected1);
Gr22Option= (RadioButton) findViewById(selected2);
if(Gr21Option== null || Gr22Option== null )
{
Toast.makeText(Form2Activity.this,"Select one of the options", Toast.LENGTH_LONG).show();
}
else
{
String a1=Gr21Option.getText().toString();
String b1=Gr22Option.getText().toString();
boolean isInserted = myDbForm2.updateForm1("B",a1,b1,"1");
if (isInserted) {
Toast.makeText(Form2Activity.this, "Data of form2 Inserted", Toast.LENGTH_LONG).show();
} else
{Toast.makeText(Form2Activity.this, "Data of form2 not Inserted", Toast.LENGTH_LONG).show();}
Toast.makeText(Form2Activity.this, Gr21Option.getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(Form2Activity.this, Gr22Option.getText().toString(), Toast.LENGTH_LONG).show();
}
}
});
}
答案 0 :(得分：0)
您尚未在第三个Activity
答案 1 :(得分：0)
此功能现在适用于我
public void Enter2(){
myDbForm2 = new DatabaseHelper(this);
radioGroup21 = (RadioGroup) findViewById(R.id.RG21);
radioGroup22 = (RadioGroup) findViewById(R.id.RG22);
Enter2= (Button) findViewById(R.id.enter2);
Enter2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int selected1 =radioGroup21.getCheckedRadioButtonId();
int selected2 =radioGroup22.getCheckedRadioButtonId();
Gr21Option= (RadioButton) findViewById(selected1);
Gr22Option= (RadioButton) findViewById(selected2);
if(Gr21Option== null || Gr22Option== null )
{
Toast.makeText(Form2Activity.this,"Select one of the options", Toast.LENGTH_LONG).show();
}
else
{
String a1=Gr21Option.getText().toString();
String b1=Gr22Option.getText().toString();
boolean isInserted = myDbForm2.updateForm1("B",a1,b1,"1");
if (isInserted) {
Toast.makeText(Form2Activity.this, "Data of form2 Inserted", Toast.LENGTH_LONG).show();
} else
{Toast.makeText(Form2Activity.this, "Data of form2 not Inserted", Toast.LENGTH_LONG).show();}
Toast.makeText(Form2Activity.this, Gr21Option.getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(Form2Activity.this, Gr22Option.getText().toString(), Toast.LENGTH_LONG).show();
}
}
});
}