我有8个EditText。
用户在某些EditText中输入一些值,并通过一些计算填充空白的EditText。
我编写代码来改变EditText的颜色,如下所示:
if (ng1 == 0) {
if (Goal >= 0 && Goal <=10)
eg1.setText(Float.toString(Goal));
eg1.setTextColor(Color.BLUE);
}
if (ng2 == 0) {
if (Goal >= 0 && Goal <=10)
eg2.setText(Float.toString(Goal));
eg2.setTextColor(Color.BLUE);
}
if (ng3 == 0 ) {
if (Goal >= 0 && Goal <=10)
//eg3.setText("");
eg3.setText(Float.toString(Goal));
eg3.setTextColor(Color.BLUE);
}
意味着情节是,用户可以将值放在2,3,4中他想要什么,其余的edittext将根据一些计算填充并显示填充的用户我需要更改它到蓝色,如果用户编辑edittext,颜色现在变成蓝色,但我想要黑色
什么方式?
答案 0 :(得分:1)
由于你有很多EditText
个控件以相同的方式处理,我建议使用TextWatcher
(documentation)来监听文字更改并避免重复所有3个,8个或数百个控件的操作相同。
请注意,以下示例未编译,并且是从内存中的简单文本编辑器中编写的,因此可能需要进行更改才能进行编译。但是,它只是一个指向正确方向的模板
首先,您要创建自定义TextWatcher
实施,以便TextWatcher
处理所有EditText
private class MyTextWatcher implements TextWatcher {
private EditText mEditText;
public MyTextWatcher(EditText view) {
mEditText = view;
}
public void afterTextChanged (Editable s) {}
public void beforeTextChanged (CharSequence s, int start, int count, int after) {}
public void onTextChanged (CharSequence s, int start, int before, int count) {
//Check if has user focus. if it has, then user is typing smth. set appropriate color
mEditText.setTextColor(mEditText.hasFocus() ? Color.BLACK : Color.BLUE);
}
};
然后在onCreate()
中添加textChange侦听器:
eg1 = (EditText)findViewById(R.id.your_eg1_id);
eg1.addTextChangedListener(new MyTextWatcher(eg1));
eg2 = (EditText)findViewById(R.id.your_eg2_id);
eg2.addTextChangedListener(new MyTextWatcher(eg2));
...
egN = (EditText)findViewById(R.id.your_egN_id);
egN.addTextChangedListener(new MyTextWatcher(eg3));
答案 1 :(得分:1)
当用户点击editText时,尝试使用onTouchListener将颜色更改为黑色。
答案 2 :(得分:0)
您必须使用文本更改侦听器。
_edtText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
_edtText.setTextColor(Color.BLACK); // you can set color onTextChanged
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
答案 3 :(得分:0)
我所做的只是为所有编辑文本添加ontouch监听器
eg1.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg1.setTextColor(Color.BLACK);
return false;
}
});
eg2.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg2.setTextColor(Color.BLACK);
return false;
}
});
eg3.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg3.setTextColor(Color.BLACK);
return false;
}
});
eg4.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg4.setTextColor(Color.BLACK);
return false;
}
});
eg5.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg5.setTextColor(Color.BLACK);
return false;
}
});
eg6.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg6.setTextColor(Color.BLACK);
return false;
}
});
eg7.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg7.setTextColor(Color.BLACK);
return false;
}
});
eg8.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
eg8.setTextColor(Color.BLACK);
return false;
}
});