1、第一種,簡單傳遞。
發送:
switch (v.getId()) {
case R.id.btn1:
EditText editText = findViewById(R.id.editText);
Intent intent = new Intent(this, my1Activity.class);
intent.putExtra("data", editText.getText().toString());
startActivity(intent);
break;
接收:
Intent intent=getIntent();
String str1 = intent.getStringExtra("data");
TextView textView=findViewById(R.id.textView3);
textView.setText(str1);
2、第二種:使用bundle.外匯常見問題
http://www.kaifx.cn/lists/question/
發送:
Bundle bundle=new Bundle();
bundle.putString("data1",editText.getText().toString()+editText.getText().toString());
intent.putExtras(bundle);
startActivity(intent);
接收:
Bundle bundle=getIntent().getExtras();
textView1.setText(bundle.getString("data1").toString());
3、相對複雜:
發送端:
case R.id.btn1:
EditText editText = findViewById(R.id.editText);
Intent intent = new Intent(this, my1Activity.class);
//定義。
Mapmap=new HashMap<>();
map.put("key1","Value1");
map.put("key2","Value1");
List> list=new ArrayList<>();
list.add(map);
//須定義一個list用於在budnle中傳遞需要傳遞的
ArrayList<Object>,這個是必須要的!
Bundle bundle=new Bundle();
ArrayList bundlelist=new ArrayList();
bundlelist.add(list);
bundle.putParcelableArrayList("list",bundlelist);
intent.putExtras(bundle);
startActivity(intent);
break;
接收:
//接收參數
Bundle bundle=getIntent().getExtras();
ArrayList list =bundle.getIntegerArrayList("list");
//把list中的參數,轉換會
List<Map<String,Object>> lists=( List<Map<String,Object>>)list.get(0);
String sResult = "";
for (Map<String, Object> m : lists) {
for (String k : m.keySet()) {
sResult += "\r\n" + k + " : " + m.get(k);
}
}
TextView textView=findViewById(R.id.textView3);
TextView textView1=findViewById(R.id.textView4);
textView1.setText(sResult);
4、定義全局變量:
定義:
public class my_data{
public static String m1;
public static Integer d1;
}
使用:
textView.setText(my_data.m1); |
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