我需要帮助.我有两个活动和一个数据库.我想要做的就是当我按下活动A中的按钮时,我将我的editText中的字符串发送到活动B.在活动B中,我尝试在我的数据库中插入该字符串并将其显示在列表视图中.如果我在活动A中启动活动B但是我不会显示活动B.
这是我的代码:
活动A:
public class Example extends Activity {
public final static String ID_EXTRA2="com.example.activities";
public EditText MyInputText = null;
ImageView MyButton;
TextView MyOutputText, MyInputtext;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.diccionary);
MyInputText = (EditText)findViewById(R.id.InputText);
MyOutputText = (TextView)findViewById(R.id.OutputText);
MyButton = (ImageView)findViewById(R.id.botonaceptar);
MyButton.setOnClickListener(MyButtonOnClickListener);
public ImageView.OnClickListener MyTranslateButtonOnClickListener = new ImageView.OnClickListener(){
public void onClick(View v) {
String InputString;
InputString = MyInputText.getText().toString();
try{
Intent d = new Intent(Example.this, Secondactivity.class);
d.putExtra(ID_EXTRA2, InputString);
//startActivity(d); <----- If i …我在将项目从spinner1更改为时遇到问题spinner2.好的我正在创建一个翻译.我有spinner1一些语言和第二个使用相同语言的微调器.我从中选择一种"来自"语言,spinner1然后从中选择"到"语言spinner2.好的,我想要做的就是当我按下按钮时,它会交换选定的微调器项目.我不知道如何实现这一点.这是我的代码:
public class Example extends Activity {
ImageView MyChangeButton;
Spinner spinner1, spinner2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MyChangeButton = (ImageView)findViewById(R.id.imageView1);
MyChangeButton.setOnClickListener(MyChangeButtonOnClickListener);
ArrayAdapter<CharSequence> adapter
= ArrayAdapter.createFromResource(this,
R.array.firstlanguage, android.R.layout.simple_spinner_item);
spinner1 = (Spinner) findViewById(R.id.spinner1);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter);
spinner2 = (Spinner) findViewById(R.id.spinner2);
adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(adapter);
}
private ImageView.OnClickListener MyChangeButtonOnClickListener = new ImageView.OnClickListener(){
public void onClick(View v) {
------>//Here the code that i want to do
}
};
};