構(gòu)造一個(gè)輸入頁面的類，使用Bundle通過<key,value>傳值（后期會(huì)改為MVVM-DataBinding形式）

public class ContentActivity extends AppCompatActivity implements View.OnClickListener {    private EditText etUrl;    private Button btnConvert;    @Override    protected void>super.onCreate(savedInstanceState);        setContentView(R.layout.activity_content);        initView();    }    private void initView() {        etUrl = (EditText) findViewById(R.id.et_url);        btnConvert = (Button) findViewById(R.id.btn_convert);        btnConvert.setOnClickListener(this);    }    @Override    public void>switch (v.getId()) {            case R.id.btn_convert:                String str_url = "https://" + etUrl.getText().toString();                Bundle bundle = new Bundle();                bundle.putString("url", str_url);                // 當(dāng)輸入框?yàn)榭諘r(shí)，提示用戶                if (str_url.equals("https://")) {                    Toast.makeText(getApplicationContext(), "輸入框不能為空", Toast.LENGTH_SHORT).show();                } else
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