如何在我的EditText中添加条件，EditText适用于年龄，应该是一个数字。
所以我想：
这是我的代码：
package mm.app.pkg;
import android.app.Activity; import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.text.InputFilter;
import android.text.Spanned;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Spinner;
import android.widget.TextView;
public class CreateNewForm extends Activity implements OnItemSelectedListener, InputFilter {
Button Browse;
ImageView CasePic;
Spinner CaseDurationH, CaseDurationM;
TextView tesst;
RadioGroup GenderSelection;
EditText CaseName, CaseClothes, CaseMoreInfo, CaseAge;
Button Next;
//For Browsering Picture
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
@Override
protected void onCreate(Bundle savedInstanceState)
{
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.create_new_form);
//To Call initializer Function
initializer();
//j list
// 1-For Uploading Picture
Browse.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
// in onCreate or any event where your want the user to
// select a file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Select Picture"), SELECT_PICTURE);
}
});
// 1-Name
final MyCase case1 = new MyCase();
case1.setName(CaseName.getText().toString());
// 2-Gender For Group Radio
GenderSelection.clearCheck();
GenderSelection.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.radio0:
case1.setGender("Male");
break;
case R.id.radio1:
case1.setGender("Female");
break;
default:
break;
}
}
});
//3-Age
String age = CaseAge.getText().toString();
private int min, max;
public void InputFilterMinMax(int min, int max) {
this.min = min;
this.max = max;
}
public void InputFilterMinMax(String min, String max) {
this.min = Integer.parseInt(min);
this.max = Integer.parseInt(max);
}
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
try {
int input = Integer.parseInt(dest.toString() + source.toString());
if (isInRange(min, max, input))
return null;
} catch (NumberFormatException nfe) { }
return "";
}
private boolean isInRange(int a, int b, int c) {
return b > a ? c >= a && c <= b : c >= b && c <= a;
}
CaseAge.setFilters(new InputFilter[]{ new InputFilterMinMax("1", "100"))};
/*int tstnum =case1.getAge();
tesst.setText(tstnum); */
//4-Duration Time
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.feedbacktypelist, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
CaseDurationH.setAdapter(adapter);
//5-Case Clothes
case1.setClothes(CaseClothes.getText().toString());
//6-Case More Information
case1.setMoreInfo(CaseMoreInfo.getText().toString());
//Move to 2nd form page
Next= (Button)findViewById(R.id.Next2);
Next.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
switch (v.getId()) {
case R.id.Next2:
try
{
Intent k = new Intent(CreateNewForm.this, CreateNewForm_2.class);
startActivity(k);
}catch(Exception e){
}
break;
}
}
});
//Spinner
CaseDurationH.setOnItemSelectedListener(new OnItemSelectedListener() {
int i =CaseDurationH.getSelectedItemPosition();
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
int i = CaseDurationH.getSelectedItemPosition();
if(i==2){
CaseDurationM.setEnabled(false);
}
String str = parent.getSelectedItem().toString();
if(str.equals("hr0"))
{
CaseDurationM.setEnabled(true);
}
if(str.equals("hr1"))
{
CaseDurationM.setEnabled(true);
}
if(str.equals("hr2"))
{
CaseDurationM.setEnabled(false);
}
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
} });
}
// To initialize the variables
private void initializer() {
// TODO Auto-generated method stub
//This information will be filled by a user
//CasePic = (ImageView) findViewById(R.id.imageView1);
CaseName= (EditText) findViewById(R.id.caseNm);
GenderSelection= (RadioGroup) findViewById(R.id.radioGroup1);
CaseAge= (EditText) findViewById(R.id.caseaage);
tesst= (TextView) findViewById(R.id.textView8);
CaseDurationH= (Spinner) findViewById(R.id.Shr);
CaseDurationM= (Spinner) findViewById(R.id.Smin);
CaseClothes= (EditText) findViewById(R.id.caseClothes);
CaseMoreInfo= (EditText) findViewById(R.id.caseMrInfo);
CasePic = (ImageView) findViewById(R.id.casepic);
Browse = (Button) findViewById(R.id.browseCasePic);
}
//For Uploading Picture
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
}
}
}
//For Uploading Picture
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
// TODO Auto-generated method stub
return null;
}
}
答案 0 :(得分：0)
首先 - 手动进行这类检查并不是一个好主意 - 看看，如果您使用的组件--ExitText支持某种内置验证器。
然后 - 毕竟，如果你想自己编写验证代码 - 这是一个例子：
EditText CAge;
CaseAge= (EditText) findViewById(R.id.caage);
String age = CaseAge.getText().toString();
if (Integer.parseInt(age) < 1) {
//handle invalid value
} else {
if ((Integer.parseInt(age) > 100){
CaseAge.setText("100");
}
}
希望这有帮助。
答案 1 :(得分：0)
尝试下面的代码实现textWatcher，该代码侦听edittext的文本事件，以便您可以在键入文本时控制用户。 你可以通过
获得editText的值String value= edt.getTest().toString();
和
edt.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
previous_text=s.toString();
}
public void afterTextChanged(Editable s) {
Integer.parse
int val= Integer.parseInt(s.toString());
if(val>100)
{
edt.setText("100");
}
if(val<0)
{
edt.setText("");
}
}
});
答案 2 :(得分：0)
这是你修复的类没有导入插入你的导入并尝试它。 希望它有所帮助。
编辑：带有一个EditText和InputFilter类的文本活动的简化版本，它确实有效。
public class CreateNewForm extends Activity {
EditText CaseAge;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout
ll = new LinearLayout(this);
CaseAge = new EditText(this) ;
CaseAge.setWidth(69);
ll.addView(CaseAge);
setContentView(ll);
CaseAge.setFilters(new InputFilter[]{new InputFilterMinMax(1, 100)});
}
class InputFilterMinMax implements InputFilter {
private int min, max;
public InputFilterMinMax(int min, int max) {
this.min = min;
this.max = max;
}
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
try {
int input = Integer.parseInt(dest.toString() + source.toString());
if (isInRange(min, max, input))
return null;
} catch (NumberFormatException nfe) {
}
return "";
}
private boolean isInRange(int a, int b, int c) {
return b > a ? c >= a && c <= b : c >= b && c <= a;
}
}
}
public class CreateNewForm extends Activity implements OnItemSelectedListener {
Button Browse;
ImageView CasePic;
Spinner CaseDurationH, CaseDurationM;
TextView tesst;
RadioGroup GenderSelection;
EditText CaseName, CaseClothes, CaseMoreInfo, CaseAge;
Button Next;
//For Browsering Picture
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.create_new_form);
//To Call initializer Function
CaseName = (EditText) findViewById(R.id.caseNm);
GenderSelection = (RadioGroup) findViewById(R.id.radioGroup1);
CaseAge = (EditText) findViewById(R.id.caseaage);
tesst = (TextView) findViewById(R.id.textView8);
CaseDurationH = (Spinner) findViewById(R.id.Shr);
CaseDurationM = (Spinner) findViewById(R.id.Smin);
CaseClothes = (EditText) findViewById(R.id.caseClothes);
CaseMoreInfo = (EditText) findViewById(R.id.caseMrInfo);
CasePic = (ImageView) findViewById(R.id.casepic);
Browse = (Button) findViewById(R.id.browseCasePic);
final MyCase case1 = new MyCase();
case1.setName(CaseName.getText().toString());
GenderSelection.clearCheck();
GenderSelection.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.radio0:
case1.setGender("Male");
break;
case R.id.radio1:
case1.setGender("Female");
break;
default:
break;
}
}
});
Browse.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
// in onCreate or any event where your want the user to
// select a file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Select Picture"), SELECT_PICTURE);
}
});
CaseAge.setFilters(new InputFilter[]{new InputFilterMinMax(1, 100)});
CaseAge.setInputType(InputType.TYPE_CLASS_NUMBER);
//String age = CaseAge.getText().toString(); //not used anywhere
// CaseAge.setFilters(new InputFilter[]{ new InputFilterMinMax("1", "100")}); //this one can be used too
//4-Duration Time
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.feedbacktypelist, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
CaseDurationH.setAdapter(adapter);
case1.setClothes(CaseClothes.getText().toString());
case1.setMoreInfo(CaseMoreInfo.getText().toString());
Next = (Button) findViewById(R.id.Next2);
Next.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
switch (v.getId()) {
case R.id.Next2:
try {
Intent k = new Intent(CreateNewForm.this, CreateNewForm_2.class);
startActivity(k);
} catch (Exception e) {
}
break;
}
}
});
//Spinner
CaseDurationH.setOnItemSelectedListener(new OnItemSelectedListener() {
int i = CaseDurationH.getSelectedItemPosition();
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
int i = CaseDurationH.getSelectedItemPosition();
if (i == 2) {
CaseDurationM.setEnabled(false);
}
String str = parent.getSelectedItem().toString();
if (str.equals("hr0")) {
CaseDurationM.setEnabled(true);
}
if (str.equals("hr1")) {
CaseDurationM.setEnabled(true);
}
if (str.equals("hr2")) {
CaseDurationM.setEnabled(false);
}
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
}
}
}
//For Uploading Picture
public String getPath(Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
class InputFilterMinMax implements InputFilter {
private int min, max;
public InputFilterMinMax(int min, int max) {
this.min = min;
this.max = max;
}
public InputFilterMinMax(String min, String max) {
this.min = Integer.parseInt(min);
this.max = Integer.parseInt(max);
}
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
try {
int input = Integer.parseInt(dest.toString() + source.toString());
if (isInRange(min, max, input))
return null;
} catch (NumberFormatException nfe) {
}
return "";
}
private boolean isInRange(int a, int b, int c) {
return b > a ? c >= a && c <= b : c >= b && c <= a;
}
}
}