android Can't create handler inside thread that has not called Looper.prepare()
16lz
2021-01-23
在android 线程中出现该错误
解决办法：
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
if(msg.what == 3){
Toast.makeText(DownloadService.this, "这里设置弹出的信息", 2000).show();
}
}
};
class MyThread implements Runnable{
@Override
public void run() {
Message msg = new Message();
msg.what = 3;
handler.sendMessage(msg);
}
}
解决办法：
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
if(msg.what == 3){
Toast.makeText(DownloadService.this, "这里设置弹出的信息", 2000).show();
}
}
};
class MyThread implements Runnable{
@Override
public void run() {
Message msg = new Message();
msg.what = 3;
handler.sendMessage(msg);
}
}
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