Alpha-Centauri :
I want to use an Intent with start(Intent) and do different things controled by a Thread. I know I need the main Context to use "startActivity" but how do I manage this from a seperate Thread? is it possible to link the "startActivity" to the main Thread using a Handler or something?
Example use:
Public Classic mThread implements Runnable{
@override
Public void Run()
{
If (true) //something is true
{
Intent intent = new Intent (Bluetoothadapter.Enable()):
startActivity(Intent):
}
If(true) //Something else is true
{
Intent intent = new Intent (MainActivity, esp.class);
startActivity (intent)
}
}
}
Update
This is the Code I have problems with:
public class cBT_startcheck extends MainActivity implements Runnable {
private int iCurrent_BT_state = mBluetoothAdapter.getState();
@Override
public void run() {
if (mBluetoothAdapter == null) {
cGlobal_values.bBT_NOADAPTER =true;
}else if (mBluetoothAdapter != null)
{
cGlobal_values.bBT_NOADAPTER =false;
switch (iCurrent_BT_state)
{
case BluetoothAdapter.STATE_ON:
cGlobal_values.bBT_GenState_on=true;
break;
case BluetoothAdapter.STATE_OFF:
cGlobal_values.bBT_GenState_on =false;
break;
}
if (!mBluetoothAdapter.isEnabled()){
Log.d("HALLO", "run: ");
//Intent intBT_start = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
//mainContext.startActivity(intBT_start);
vStart_BT();
}
}
}
}
MainActivity
This is what I made in the MainActivity
public class MainActivity extends AppCompatActivity {
public Handler mainHandler = new Handler(Looper.getMainLooper());
public void vStart_BT()
{
mainHandler.post(new Runnable() {
@Override
public void run() {
Intent intBT_start = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivity(intBT_start);
}
});
}
}
Question
How can I execute some Intents from a secound thread written in a seperated class?
If this idea itself is not right:
I don't know how to pass an Intent to the main Thread using "starActivity".
Alpha-Centauri :
Solution is WeakReference<>
In the new Thread, you need to implement the following:
public class cBT_startcheck extends MainActivity implements Runnable {
private WeakReference<MainActivity> activityWeakReference;
cBT_startcheck(MainActivity activity){
activityWeakReference =new WeakReference<MainActivity>(activity);
}
@Override
public void run() {
final MainActivity activity =activityWeakReference.get();
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
activity.startAplication(intent)
}
}
MainActivity onCreat
Runnable rcBT_startcheck = new cBT_startcheck(this);
new Thread(rcBT_startcheck).start();
Guess you like
Origin http://43.154.161.224:23101/article/api/json?id=328116&siteId=1