一、页面跳转
1、没有返回值的
打开Aty1
//跳转Aty1Intent i=new Intent(MainActivity.this,Aty1.class);//打开startActivity(i);
关闭Aty1
finish();
2、有返回值的
打开Aty1并传入字符串
private Button btnStartAty1;private TextView tvOut;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);btnStartAty1=(Button)findViewById(R.id.btnStartAty1);tvOut=(TextView)findViewById(R.id.tvOut);btnStartAty1.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {Intent i=new Intent(MainActivity.this,Aty1.class);//传递字符串i.putExtra("txt", "adkj");//打开activity并可以接收返回的值startActivityForResult(i,0);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {//接收字符串String result=data.getStringExtra("result");tvOut.setText(result);super.onActivityResult(requestCode, resultCode, data);}
Aty1返回信息
private Button btnClose;private TextView tvOut;protected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.aty1);btnClose=(Button)findViewById(R.id.btnClose);btnClose.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {Intent i=new Intent();i.putExtra("result","Hello MainActiviy");//发送返回值setResult(0,i);finish();}});tvOut=(TextView)findViewById(R.id.tvOut);tvOut.setText(getIntent().getStringExtra("txt"));}
二、参数传递
1、方法一
//跳转Aty1Intent i=new Intent(MainActivity.this,Aty1.class);//传递参数i.putExtra("txt", "adkj");//打开startActivity(i);
接收参数
getIntent().getStringExtra("txt")
2、方法二
Intent i=new Intent(MainActivity.this,Aty1.class);Bundle data=new Bundle();data.putString("txt","Hello Aty1");i.putExtras(data);startActivity(i);
接收参数
Bundle data=getIntent().getExtras();String txt=data.getString("txt");
