public void onClick(View v) {
switch(v.getId()){
case R.id.save2:
s = text.getText().toString();
number = Float.parseFloat(num.getText().toString());
SharedPreferences.Editor editor = shared.edit();
editor.putString("sharedtext",s);
editor.putFloat("sharednum",number);
editor.commit();
Toast.makeText(this,"save2",Toast.LENGTH_SHORT).show();
break;
case R.id.load2:
String returner = shared.getString("sharedtext","Returner fail");
float returnnum = shared.getFloat("sharednum",0);
text.setText(returner);
num.setText(returnnum); //error here
Toast.makeText(this,"load2",Toast.LENGTH_SHORT).show();
break;
case R.id.page2:
intent= new Intent(this,SharedPreferencesActivity.class);
startActivity(intent);
Toast.makeText(this,"page2",Toast.LENGTH_SHORT).show();
break;
}
我怎么能解决这个错误?
如何制作类似setInt(int num);
的内容btw变量num和text都是EditText
答案 0 :(得分:9)
如果您将数值作为文本传递给文本字段,Android会尝试将其解释为资源ID。先把它作为文本。首选方法是:
num.setText(String.valueOf(returnnum));
(有关转换为字符串的良好做法,check this post)