我想在收到消息后立即在接收方更新我的文本视图。我有以下代码创建主要活动的实例,并在广播接收器中使用它来更新UI。但是文本视图没有更新?
public class Mainactivity extends activity{
private static MainActivity ins;
public static MainActivity getInst()
{
return ins;
}
protected void onCreate(Bundle savedInstanceState) {
ins=this;}
public void updateUI(final String s)
{
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
TextView textView=(TextView) findViewById(R.id.textView);
textView.setText(s);
}
});
}
在smsreceiver类中
public class smsreceiver extends BroadcastReceiver
{
try{
if (MainActivity.getInst()!=null)
MainActivity.getInst().updateUI(str);
}
catch(Exception e){
e.printStackTrace();
}
}
请帮帮我!!
如果您尝试如下操作,该怎么办:
public class Mainactivity extends activity{
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.your_layout);
//register your receiver
}
protected void onDestroy() {
//unregister your receiver
super.onDestroy();
}
public void updateUI(final String s)
{
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
TextView textView=(TextView) findViewById(R.id.textView);
textView.setText(s);
}
});
}
private class smsreceiver extends BroadcastReceiver
{
try{
updateUI(str)
}
catch(Exception e){
e.printStackTrace();
}
}
}
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