在EditText 过滤Filtering 数据

注：（标题有改动）原文出自：http://wang-peng1.javaeye.com/blog/669520 和 http://wang-peng1.javaeye.com/blog/669384

一 。edit不可编辑的实现

import android.app.Activity;

import android.os.Bundle;

import android.text.InputFilter;

import android.text.Spanned;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

/**

* Class which shows how to lock and unlock EditText component

*

* @author FaYnaSoft Labs

*/

public class Main extends Activity {

private EditText editText;

private boolean value = false;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

editText = (EditText) findViewById(R.id.textId);

editText.setText(“EditText component”);

Button b = (Button) findViewById(R.id.btnId);

b.setText(“Lock/Unlock”);

b.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if (value) {

value = false;

} else {

value = true;

}

lockUnlock(value);

}

});

}

/**

* Method which locks and unlocks editText component

* @param value our boolean value which using in or if operator

*/

private void lockUnlock(boolean value) {

if (value) {

editText.setFilters(new InputFilter[] { new InputFilter() {

@Override

public CharSequence filter(CharSequence source, int start,

int end, Spanned dest, int dstart, int dend) {

return source.length() < 1 ? dest.subSequence(dstart, dend)

: “”;

}

} });

} else {

editText.setFilters(new InputFilter[] { new InputFilter() {

@Override

public CharSequence filter(CharSequence source, int start,

int end, Spanned dest, int dstart, int dend) {

return null;

}

} });

}

}

}

二  。  在edittext中过滤Filtering，可用的数据

emailText.setKeyListener(new NumberKeyListener() {
@Override
public int getInputType() {
return InputType.TYPE_MASK_VARIATION;
}

@Override
protected char[] getAcceptedChars() {
return new char[]{‘i’, ‘o’, ‘p’, ‘a’, ‘s’, ‘d’, ‘f’, ‘g’,
‘h’, ‘j’, ‘k’, ‘l’, ‘z’, ‘x’, ‘q’, ‘w’, ‘e’, ‘r’, ‘t’,
‘y’, ‘u’, ‘c’, ‘v’, ‘b’, ‘n’, ‘m’, ‘.’, ‘@’, ‘_’, ’1′, ’2′,
’3′, ’4′, ’5′, ’6′, ’7′, ’8′, ’9′, ’0′,};
}
});

——————————————————————————-

emailText.setKeyListener(new NumberKeyListener() {
@Override
public int getInputType() {
return InputType.TYPE_NULL;
}

@Override
protected char[] getAcceptedChars() {
return new char[]{‘i’, ‘o’, ‘p’, ‘a’, ‘s’, ‘d’, ‘f’, ‘g’,
‘h’, ‘j’, ‘k’, ‘l’, ‘z’, ‘x’, ‘q’, ‘w’, ‘e’, ‘r’, ‘t’,
‘y’, ‘u’, ‘c’, ‘v’, ‘b’, ‘n’, ‘m’, ‘.’, ‘@’, ‘_’, ’1′, ’2′,
’3′, ’4′, ’5′, ’6′, ’7′, ’8′, ’9′, ’0′,};
}
});

………………………………………………………………………….

emailText.setText(“EditText element”);
emailText.setKeyListener(new NumberKeyListener() {
@Override
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
return source.length() < 1 ? dest.subSequence(dstart, dend) : “”;
}

@Override
public int getInputType() {
return InputType.TYPE_MASK_VARIATION;
}
@Override
protected char[] getAcceptedChars() {
return new char[]{‘i’, ‘o’, ‘p’, ‘a’, ‘s’, ‘d’, ‘f’, ‘g’,
‘h’, ‘j’, ‘k’, ‘l’, ‘z’, ‘x’, ‘q’, ‘w’, ‘e’, ‘r’, ‘t’,
‘y’, ‘u’, ‘c’, ‘v’, ‘b’, ‘n’, ‘m’, ‘.’, ‘@’, ‘_’, ’1′, ’2′,
’3′, ’4′, ’5′, ’6′, ’7′, ’8′, ’9′, ’0′,};
}
});