Question

因此，我正在构建此电话应用程序。在MainActivity中，它会使用人的名字呼叫另一个活动phoneActivity，当您单击一个名字时，它将拉出带有该人的电话号码的电话应用程序。通话结束后，我想让它返回主活动。我被困在那里。我认为原因是我在通话结束或排序后没有结束活动。

我确实在日志中看到它已变为OFFHOOK。通话结束后，我需要终止活动吗？

public class PhoneActivity extends AppCompatActivity {

Intent dialIntent;
//need to keep track coz first state is IDLE
boolean offHook = false;
String[] initialItems =  {"Zod","Lida"};
HashMap<String, String> map = new HashMap<>();

/* Check the Phone State to move back to the calling page */
private class EndCallListener extends PhoneStateListener {
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
        int prevState = state;
        Log.i("State of Call: ", Integer.toString(state));

        if(TelephonyManager.CALL_STATE_RINGING == state) {
            Log.i("PHONE ", "RINGING, number: " + incomingNumber);
        }
        if(TelephonyManager.CALL_STATE_OFFHOOK == state) {
            //wait for phone to go offhook (probably set a boolean flag) so you know your app initiated the call.
            Log.i("PHONE ", "OFFHOOK"); // I see this in logs, what needs to be done here?
            //phone has passed the inital state
            offHook = true;
        }
        if(TelephonyManager.CALL_STATE_IDLE == state) {
            //when this state occurs, and your flag is set, restart your app
            Log.i("PHONE ", " Enter IDLE");
            //finish();
            if((prevState==TelephonyManager.CALL_STATE_OFFHOOK)){
                Log.i("PHONE", "prev OFFHOOK " + Integer.toString(state));
                prevState=state;
                //Answered Call which is ended
                finish();
            }
            if((prevState==TelephonyManager.CALL_STATE_RINGING)){
                Log.i("PHONE", "prev RINGING " + Integer.toString(state));
                prevState=state;
                //Rejected or Missed call
            }
            /*
            if ( offHook ) {
                //finish();
                Log.i("PHONE","IDLE OFFHOOK");
                Intent goBack = new Intent(getApplicationContext(), MainActivity.class);
                //Initial phone state is false
                offHook = false;
                startActivity(goBack);

            } */
        }
    }
}

public void openDialer(String person) {
    Log.i("openDialer: ", "inside opendialer");
    //Uri u = Uri.parse("tel:" + "xxxxxxxxx");
    Uri u = Uri.parse("tel:" + map.get(person));
    dialIntent = new Intent(Intent.ACTION_DIAL,u);
    //dialIntent.setAction(Intent.ACTION_DIAL);
    PhoneActivity.EndCallListener callListener = new PhoneActivity.EndCallListener();
    TelephonyManager mTM = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
    mTM.listen(callListener, PhoneStateListener.LISTEN_CALL_STATE);
    startActivity(dialIntent);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_phone);
    /*
    HashMap<String, String> map = new HashMap<>();
    map.put("Zod","+88888888888");
    map.put("Lida","+140888888888");
    final List<String> myList =  map;
    */
    map.put("Zod","+18188888888");
    map.put("Lida","+14088888888");

    final List<String> myList = Arrays.asList(initialItems);
    ArrayAdapter arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,myList){
    //ArrayAdapter arrayAdapter = new ArrayAdapter<HashMap>(this, android.R.layout.simple_list_item_1,myList){
    public View getView(int position, View convertView, ViewGroup parent) {
            //Cast the listView each item as textView
            TextView item = (TextView) super.getView(position, convertView, parent);
            // Set the item text style to bold
            item.setTypeface(item.getTypeface(), Typeface.BOLD);
            // Set size to 36
            item.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 36);
            return item;
        }
    };
    ListView listView = findViewById(R.id.listView);
    listView.setAdapter(arrayAdapter);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Log.i("Item clicked: ", myList.get(position));
            Toast.makeText(getApplicationContext(),"Calling " + myList.get(position), Toast.LENGTH_LONG).show();
            openDialer(myList.get(position));
           //System.out.println( myList.get(position) );
        }
    });
    TextView textViewEdit = findViewById(R.id.textViewEdit);
    textViewEdit.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            openDialer("Dummy");
        }
    });
}
}

Answer 1

在finish()之后

呼叫startActivity(dialIntent);将关闭您的phoneActivity并返回到您的MainActivity。

难以结束通话并返回MainActivity

1 个答案: