<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".second">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.857" />
<ImageView
android:id="@+id/imageReva"
android:layout_width="179dp"
android:layout_height="174dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="32dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toTopOf="@+id/textView2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.502"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/rev" />
<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyleLargeInverse"
android:layout_width="224dp"
android:layout_height="86dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:indeterminate="false"
android:max="100"
android:minWidth="200dp"
android:minHeight="50dp"
android:progress="1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.926" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:text="LOCATE"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.709" />
<EditText
android:id="@+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:ems="10"
android:hint="Route number"
android:inputType="number"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.529"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.498" />
</android.support.constraint.ConstraintLayout>`
是XML代码enter image description here。我正在尝试为大学跟踪系统构建应用程序。我正在运行一项服务，该服务在后台等待用户等待我使用进度条，问题是我给你错误的吗。我如何处理线程，这是问题，它可以在NXT（oreo）上的samsun银河上工作，但在几乎所有mi设备上都不能工作。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
progressBar = (ProgressBar)findViewById(R.id.progressBar);
progressBar.setVisibility(View.INVISIBLE);
tv = (TextView)findViewById(R.id.textView);
ed = (EditText)findViewById(R.id.editText);
tv.setVisibility(View.INVISIBLE);
if ( !isNetworkAvailable() ) {
net();
}
b = (Button)findViewById(R.id.button);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!isNetworkAvailable()) {
net();
} else {
con.route = ed.getText().toString().trim();
if (con.route.isEmpty()) {
ed.setError("Please enter your route number!");
ed.requestFocus();
} else {
int rout = Integer.parseInt(con.route);
con.integer_route = rout;
/*
replace the below line in if condition when all the routes are done
rout>0 && rout <= 30*/
if (rout == 21) {
Intent i = new Intent(second.this, TestService.class);
second.this.startService(i);
count++;
somee();
} else {
Toast.makeText(getApplicationContext(), "please enter valid route number!", Toast.LENGTH_SHORT).show();
}
}
}
}
});
}
private void net() {
AlertDialog.Builder builder = new AlertDialog.Builder(
second.this);
builder.setCancelable(false);
builder.setTitle("Alert !!!");
builder.setMessage("There seems to be no active internet connection to your device \nplease connect to internet and try again");
builder.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
finish();
}
});
builder.show();
}
private void somee() {
if (count ==1) {
progressBar.setVisibility(View.VISIBLE);
tv.setVisibility(View.VISIBLE);
new Thread(new Runnable() {
public void run() {
while (progressStatus < 100) {
progressStatus += 1;
// Update the progress bar and display the
//current value in the text view
handler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressStatus);
tv.setText(progressStatus + "/" + progressBar.getMax());
}
});
try {
// Sleep for 600 milliseconds.
Thread.sleep(600);
} catch (InterruptedException e) {
e.printStackTrace();
}
if ((!con.longitude.isEmpty()) || (!con.latitude.isEmpty())) {
count = 0;
progressStatus = 0;
shouldthisactivityrun = false;
startActivity(new Intent(second.this, error.class));
finish();
break;
}
}
progressBar.setVisibility(View.INVISIBLE);
if (shouldthisactivityrun){
count = 0;
progressStatus=0;
startActivity(new Intent(second.this, error.class));}
}
}).start();
}