我试图通过不同的按钮在单个listview上使用多个数据，因为从activity1开始有两个按钮，如果在activity2上单击button1，它将显示不同的数据，如果单击button2则分别比较数据
//main
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b1 = (Button) findViewById(R.id.button1);
Button b2 = (Button) findViewById(R.id.button2);
b1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent(MainActivity.this, NEXT.class) );
}
});
b2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent(MainActivity.this, NEXT.class) );
}
});
}
}
//for second activity
public class NEXT extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.next);
if (R.id.button1 == clicked) //did onClick="clicked"
{
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.acceptors)));
}
else
{
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.donars)));
}
}
}
您应该使用该类的putExtra()方法Intent。MainActivity用key将boolean extra输入acceptors：
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b1 = (Button) findViewById(R.id.button1);
Button b2 = (Button) findViewById(R.id.button2);
b1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent(MainActivity.this, NEXT.class).putExtra("acceptors", true);
}
});
b2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent(MainActivity.this, NEXT.class).putExtra("acceptors", false));
}
});
}
}
然后在您的NEXT活动中，获取意图，并检查您是否获得了接受者或捐赠者：
public class NEXT extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.next);
boolean isAcceptors = getIntent().getBooleanExtra("acceptors", false);
if (isAcceptors) //did onClick="clicked"
{
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.acceptors)));
}
else
{
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.donars)));
}
}
}
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