我怎样才能使用Android的进度条
问题描述:
我设计的android应用程序,使用android 4.3可以连接蓝牙LE 4.0设备,我想知道rssi,所以我的MainActivity已经获得rssi的值,但只有数字,我尝试让这些数字成为进步百分比,但它不起作用?我怎样才能使用Android的进度条
我获取RSSI的价值功能:
public void run(){
int realRssi = rssi+100;
mDeviceRssi = ressi + "db" ;
mDeviceRssiView.setText(mDeviceRssi);
}
现在,这里是我的问题:
public class sending_thread extends Thread{
public void run(){
try{
while(true){
int progress = Integer.parseInt(mDeviceRSSI);
int[] int_progress = new int[1];
int_progress[0] = progress;
MainActivity.handler.sendMessage(MainActivity.handler.obtainMessage(1,int_progress));
Thread.sleep(1000);
}
}
catch(Exception e){}
}
}
但诠释进度=的Integer.parseInt(mDeviceRSSI)不工作。
private void seekCircle(){
SeekCircle seekCircle = (SeekCircle) findViewById(R.id.seekCircle);
try{
handler = new Handler() {
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 1:
int[] receive_obj = (int[]) msg.obj;
updateText(receive_obj[0]);
break;
}
}
};
}catch (Exception e) {
Log.d("Handler exception", e.toString());
}
send_thread = new sending_thread();
send_thread.start();
}
这是我的错误,代码应该是这样的:
mDeviceRSSI = rssi + " db";
mDeviceRssiView.setText(mDeviceRSSI);
int progress = Integer.parseInt(mDeviceRSSI); //error
int[] int_progress = new int[1];
int_progress[0] = progress;
我知道mDeviceRSSI是字符串,但我不知道如何转化的字符串转换成int?
答
它看起来像你的属性mDeviceRssi
包含的字符:
mDeviceRssi = ressi + "db"
,以后你做:
int progress = Integer.parseInt(mDeviceRSSI);
无法运作。
我的错误,应该是这样的: – 2014-10-29 01:09:19