public class MainActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } public void openActivity(View v){ //打开新的Activity Intent intent = new Intent(this, OtherActivity.class);//激活组件,显示意图:明确指定了组件名称的意图叫显示意图 //关于指定组件名称,还有很多写法 //1> intent.setClass(this, OtherActivity.class);//指定要激活的组件名称 //2> intent.setClassName(this, "cn.itcast.activitys.OtherActivity");//还可以激活别的应用的Activity //3> intent.setComponent(new ComponentName(this, OtherActivity.class)); // intent.setClassName(this, "cn.itcast.activitys.OtherActivity"); /* intent.putExtra("company", "传智播客"); intent.putExtra("age", 5); */ Bundle bundle = new Bundle(); bundle.putString("company", "CSDN"); bundle.putInt("age", 11); intent.putExtras(bundle); //startActivity(intent); startActivityForResult(intent, 100); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { String result = data.getStringExtra("result"); Toast.makeText(getApplicationContext(),result, 1).show(); super.onActivityResult(requestCode, resultCode, data); } }
public class OtherActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.other); TextView textView = (TextView) this.findViewById(R.id.textView); Intent intent = getIntent();//获取用于激活它的意图对象 /* String company = intent.getStringExtra("company"); int age = intent.getIntExtra("age", 0); */ Bundle bundle = intent.getExtras(); String company = bundle.getString("company"); int age = bundle.getInt("age"); textView.setText("公司名称:"+ company+ ",年限:"+ age); } public void closeActivity(View v){ Intent intent = new Intent(); intent.putExtra("result", "老方与丽丽的故事,后面省略2000字"); setResult(20, intent);//设置返回数据 finish();//关闭Activity(关闭窗口) } }