找不到用于处理Intent {的活动“ act = android.intent.action.CALL dat =电话号码：1}？

Question

My program compiles, and works on everything it proposes, except when I try to use the phone call feature, it breaks. I've already changed the manifest , the Activity , and the main class, entered the necessary permissions, but it does not work. The error occurs at line 50 of this code: https://ideone.com/JrdBrp . The class is called StudentCall .

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) == PackageManager.PERMISSION_GRANTED) {
        startActivity(it);//line 50
    }
}

The error message is: "android.content.ActivityNotFoundException: No Activity found to handle Intent {act = android.intent.action.CALL dat = Phone number: 1}" . And that class is called by the MainStudent class, inserted in this code: https://ideone.com/b4jyU6 ,

public void call(View view){
    Intent it = new Intent(this, StudentCall.class);
    it.putExtra("students", students);
    startActivity(it);
}

the function that calls the previous class, is called "call", at line 31. Could you please helpe me?

Answer 1

Uri uri = Uri.parse("Phone number:" + student.phone_number);

This is not a valid Uri . Phone number: is not a valid scheme, and 1 is unlikely to be a valid phone number.

Use the tel: scheme and an actual phone number.