intent传递string值失败

Question

android 中的activity：

private void switchActivity(String key)
    {
        String r="123";
        Bundle basket=new Bundle();
        //basket.putString("key", key);
        basket.putString("roll", r);
        Intent i=new Intent(Andprj.this, extra.class);
        i.putExtras(basket);
        startActivity(i);

    }

在其他activity：

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.exam);
    tv=(TextView) findViewById(R.id.t1);
    setContentView(R.layout.exam);
    Bundle gotbasket=getIntent().getExtras();
    String gotbread=gotbasket.getString("roll");
    tv.setText(gotbread);
}

显示出来的只有默认值的textview。

Answer 1

protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.exam);
        tv=(TextView) findViewById(R.id.t1);
        Bundle gotbasket=getIntent().getExtras();
        String gotbread=gotbasket.getString("roll");
        tv.setText(gotbread);
    }

试试这个方法吧