Android用代码实现EditText不可编辑

在xml文件中实现EditText不可编辑很简单，只要设置android:editable的值为false即可，可是在代码中却没有setEditable方法；

在代码中设置EditText不可编辑只能使用以下代码：

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) : "";
}
}
});

下面是一个例子：

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;
}
} });
}
}
}