android学习札记 Intent 一个Activity当中的值传到另一个Activity

android学习笔记 Intent 一个Activity当中的值传到另一个Activity

\\第一个Activity中给Intent添加键值对

public void onClick(View view) {
  int buttonId = view.getId();   
  switch (buttonId) {
  case R.id.button_1:
   String editText1Str = editText1.getText().toString();
   String editText2Str = editText2.getText().toString();
   Intent intent = new Intent();
   intent.putExtra("one", editText1Str);
   intent.putExtra("two", editText2Str);
   intent.setClass(Activity01.this, ResultActivity.class);
   Activity01.this.startActivity(intent);
   break;

}

\\第二个Activity中用键还取值

protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.result);
  TextView textView = (TextView) findViewById(R.id.textview_2);
  Intent intent = getIntent();
  
  String oneStr = intent.getStringExtra("one");
  String twoStr = intent.getStringExtra("two");
  int one=Integer.parseInt(oneStr);
  int two=Integer.parseInt(twoStr);
  int result = one * two;
  textView.setText(result + "");

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