关于Activity的基础

Activity跳转的最简单实用方法

public  void onClick(View V)

{

    Intent intent = new Intent(First.this, Second.class);

    startActivity(intent);

}

Activity之间数据的传递

FirstActivity

String text = editText.getText().toString();

Bundle b = new Bundle();

b.putString("text", text);

intent.putExtras(b);

Intent intent = new Intent(F.this, S.class);

startActivity(intent);

SecondActivity

Intent intent = getIntent();

Bundle b = intent.getExtras();

String s = b.getString("text");