android实现页面跳转及传参

创建一个新的页面

初始页面

btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this,MainActivity2.class);
                String info= "value11212121"; //要传递的值
                intent.putExtra("info",info);
                startActivity(intent);
            }
        });

目的页面

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        Intent intent=getIntent();
        String info=intent.getStringExtra("info");
        Log.v("Info:",info);

    }