1.使用Intent进行传输

    //发送数据的Activity        class button implements OnClickListener{            @Override            public void onClick(View v) {                // TODO Auto-generated method stub                String ET_1String = ET_1.getText().toString();          //得到文本输入框中的文本                String ET_2String = ET_2.getText().toString();                Intent intent = new Intent();                intent.putExtra("one",ET_1String);                      //进行参数的传递（“参数名字”，参数）                intent.putExtra("two",ET_2String);                intent.setClass(MainActivity.this, result.class);                MainActivity.this.startActivity(intent);            }        }                //接收数据的Activity          public class result extends Activity{        private TextView resulTextView;                                 @Override        protected void onCreate(Bundle savedInstanceState) {                super.onCreate(savedInstanceState);                setContentView(R.layout.result);                resulTextView = (TextView)findViewById(R.id.TV_1);                Intent intent = getIntent();                        //定义接收数据的Intent                String oneString = intent.getStringExtra("one");                String twoString = intent.getStringExtra("two");                int a = Integer.parseInt(oneString);                //进行计算之前要进行强制类型转换                int b = Integer.parseInt(twoString);                int c = a * b;                resulTextView.setText(c + "");                      //要加一个空字符对int类型进行强制类型转换            }        }  

2.使用静态变量进行传递

    1.主界面(发送数据的Activity)                class ButtonListener implements android.view.View.OnClickListener{                @Override                public void onClick(View arg0) {                    // TODO Auto-generated method stub                    Intent intent = new Intent();                    intent.setClass(MainActivity.this, OtherActivity.class);                    OtherActivity.nameString = "zhao";                    startActivity(intent);                }            }                    2.接受数据Activity                        public class OtherActivity extends Activity{            //定义静态变量            public static String nameString;                        @Override            protected void onCreate(Bundle savedInstanceState) {                super.onCreate(savedInstanceState);                setContentView(R.layout.otheractivity);                System.out.println("nameString-------->"+nameString);            }        }  

3.利用setResult进行数据传输

    //1.要关闭的页面        protected void onCreate(Bundle savedInstanceState) {            super.onCreate(savedInstanceState);            setContentView(R.layout.otheractivity);            Intent intent = this.getIntent();            intent.putExtra("tel", 12345);            //设置requestCode和带有数据的intent对象            OtherActivity.this.setResult(3, intent);            //马上关闭Activity            this.finish();        }                //2.上面的页面关闭时，此页面进行数据的接收        class ButtonListener implements android.view.View.OnClickListener{            @Override            public void onClick(View arg0) {                Intent intent = new Intent();                intent.setClass(MainActivity.this, OtherActivity.class);                //与普通的start方法不同，需要设置requestCode                startActivityForResult(intent, 1);            }        }                //如果要进行此操作，需要在数据接收页面中复写activity的onActivityResul()方法        @Override        protected void onActivityResult(int requestCode, int resultCode, Intent data) {            super.onActivityResult(requestCode, resultCode, data);            int tel = 0;            //根据返回码resultCode来判断下一步进行的业务代码            if(resultCode==3){                tel = data.getIntExtra("tel", 0);            }            Log.i(TAG, "tel--------->"+String.valueOf(tel));        }