android - 恢复输入的编辑文本值

该值输入到活动A的编辑文本中。如果不保存又返回A而转到另一个活动B，则活动A的编辑文本中的表单值将被清除。如何还原编辑文本值？

 @Override
protected void onSaveInstanceState(Bundle outState) {

    outState.putString("company", company.getText().toString());
    outState.putString("name", name.getText().toString());
    outState.putString("email",email.getText().toString());
    outState.putString("phone",phone.getText().toString());
    outState.putString("address",address.getText().toString());
    outState.putString("desc",desc.getText().toString());
    super.onSaveInstanceState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
     co = savedInstanceState.getString("comoany");
     em = savedInstanceState.getString("email");
     ph = savedInstanceState.getString("phone");
     add = savedInstanceState.getString("address");
     na = savedInstanceState.getString("name");
     de = savedInstanceState.getString("desc");
}

@Override
protected void onResume() {

    Log.i("this", "Company::::::::::::" + co);
    company.setText(co);
    super.onResume();
}

最佳答案

您需要重写活动A中的onSaveInstanceState并按如下所示存储编辑文本的值：

 @Override
public void onSaveInstanceState(Bundle outState) {

outState.putString(TEXT_VIEW_KEY, mTextView.getText());

// call superclass to save any view hierarchy
super.onSaveInstanceState(outState);

}

并且在您的onCreate活动中现在应该检查以前是否保存过任何数据，然后初始化您的textview

@Override
public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

// recovering the instance state
if (savedInstanceState != null) {
    String text  = savedInstanceState.getString(TEXT_VIEW_KEY,);
}


setContentView(R.layout.main_activity);

// initialize member TextView so we can manipulate it later
mTextView = (TextView) findViewById(R.id.text_view);
mTextView.setText(text);

}

您可能还需要检查android的体系结构组件，特别是生命周期感知组件，以减轻您的工作时间

关于android - 恢复输入的编辑文本值，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51322048/