大家好我正在开发一个Android应用程序,我在代码中有一些混乱,我有一个主要的活动,我存储一些数组值。 我有两个xml文件(一个mainactivity.xml,另一个是listview.xml)
在main activity.xml中有四个开关,当我点击任何特定的开关时,它应该带我到listview.xml,列表视图适配器在列表视图上显示相应的数组。代码如下
public class MainActivity extends ActionBarActivity {
ListView l;
Button chem = (Button) findViewById(R.id.button4);
public String[] contentc = {
"Abundance",
"Anxiety",
"Bruxism",
"Discipline",
"Drug Addiction"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
l= (ListView) findViewById(R.id.listview);
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_element, contentp);
chem.setOnClickListener(new OnClickListener() {
public void onClick(View v)
{
//DO SOMETHING! {RUN SOME FUNCTION ... DO CHECKS... ETC}
setContentView(R.layout.list);
l.setAdapter(adapter);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
答案 0 :(得分:0)
Intent intent = new Intent(activity2.this, activity1.class);
intent.putExtra("message", message);
startActivity(intent);
在activity1中,在onCreate()中,您可以通过检索Bundle(包含调用活动发送的所有消息)来获取String消息,并在其上调用getString():
Bundle bundle = getIntent().getExtras();
String message = bundle.getString("message")