Call State
It is a decision block that verifies the status of a phone call. Here is more on that:
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- If the continue option is set to Immediately, then without interrupting the fiber, check if a call is currently in the state.
- If When changed is selected, the fiber will pause until a call enters or exits the state.
- The TelephonyManager class can also be used to obtain call state information.
- To accomplish this, we must use the PhonStateListener instance to invoke the listen method of the TelephonyManager class.
- To obtain the call state, the PhoneStateListener interface must be implemented.
- It has a single method called onCallStateChanged ().
