【无标题】android号码

public class MainActivity extends AppCompatActivity {
private EditText et;
private Button btn;
SharedPreferences sp;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    et = findViewById(R.id.et);
    btn = findViewById(R.id.button);

    sp = getSharedPreferences("mingdan", MODE_PRIVATE);


    if (ContextCompat.checkSelfPermission(this, Manifest.permission.PROCESS_OUTGOING_CALLS)
            != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.PROCESS_OUTGOING_CALLS},1
        );
    }else{
    }

    btn.setonClickListener(new View.onClickListener() {
        @Override
        public void onClick(View view) {
            String num = et.getText().toString().trim();
            SharedPreferences.Editor editor = sp.edit();
            editor.putString("number",num);
            editor.commit();
            Toast.makeText(MainActivity.this,"已设置拦截",Toast.LENGTH_SHORT).show();


        }
    });

}

}

public class MainActivity extends AppCompatActivity {
private EditText et;
private Button btn;
SharedPreferences sp;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    et = findViewById(R.id.et);
    btn = findViewById(R.id.button);

    sp = getSharedPreferences("mingdan", MODE_PRIVATE);


    if (ContextCompat.checkSelfPermission(this, Manifest.permission.PROCESS_OUTGOING_CALLS)
            != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.PROCESS_OUTGOING_CALLS},1
        );
    }else{
    }

    btn.setonClickListener(new View.onClickListener() {
        @Override
        public void onClick(View view) {
            String num = et.getText().toString().trim();
            SharedPreferences.Editor editor = sp.edit();
            editor.putString("number",num);
            editor.commit();
            Toast.makeText(MainActivity.this,"已设置拦截",Toast.LENGTH_SHORT).show();


        }
    });

}

}