Android startActivityForResult的使用

来源：互联网发布：indesign cc软件下载编辑：程序博客网时间：2024/06/15 05:31

package sn.len.actres;    import android.app.Activity;  import android.content.Intent;  import android.os.Bundle;  import android.view.View;  import android.view.View.OnClickListener;  import android.widget.Button;  import android.widget.TextView;    public class ActivityResultDemoActivity extends Activity  {      private Button button_start_task;      private TextView TextView_result;      @Override      public void onCreate(Bundle savedInstanceState)      {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          button_start_task=(Button) findViewById(R.id.button_start_task);          TextView_result=(TextView) findViewById(R.id.TextView_result);          button_start_task.setOnClickListener(new button_start_task_Listener());      }      private class button_start_task_Listener implements OnClickListener      {          public void onClick(View v)          {              Intent intent=new Intent(ActivityResultDemoActivity.this,SimpleTaskActivity.class);              //关键点来了，使用startActivityForResult来启动              startActivityForResult(intent, 100);          }      }      /**      * 复写onActivityResult，这个方法      * 是要等到SimpleTaskActivity点了提交过后才会执行的      */      @Override      protected void onActivityResult(int requestCode, int resultCode, Intent data)      {          //可以根据多个请求代码来作相应的操作          if(20==resultCode)          {              String bookname=data.getExtras().getString("bookname");              String booksale=data.getExtras().getString("booksale");              TextView_result.setText("书籍名称:"+bookname+"书籍价钱"+booksale+"元");          }          super.onActivityResult(requestCode, resultCode, data);      }  }

package sn.len.actres;    import android.app.Activity;  import android.content.Intent;  import android.os.Bundle;  import android.view.View;  import android.view.View.OnClickListener;  import android.widget.Button;  import android.widget.EditText;    public class SimpleTaskActivity extends Activity  {      private EditText EditText_bookname;      private EditText EditText_booksale;      private Button Button_task_fulfill;        @Override      protected void onCreate(Bundle savedInstanceState)      {          super.onCreate(savedInstanceState);          setContentView(R.layout.main2);                    EditText_bookname=(EditText) findViewById(R.id.EditText_bookname);          EditText_booksale=(EditText) findViewById(R.id.EditText_booksale);          Button_task_fulfill=(Button) findViewById(R.id.Button_task_fulfill);          Button_task_fulfill.setOnClickListener(new Button_task_fulfill_Listener());      }      private class Button_task_fulfill_Listener implements OnClickListener      {          public void onClick(View v)          {              String str_bookname=EditText_bookname.getText().toString();              String str_booksale=EditText_booksale.getText().toString();                            //判断空，我就不判断了。。。。              Intent data=new Intent();              data.putExtra("bookname", str_bookname);              data.putExtra("booksale", str_booksale);              //请求代码可以自己设置，这里设置成20              setResult(20, data);              //关闭掉这个Activity              finish();          }      }  }

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