Android_Intent_passValue(4)
xml布局文件: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity" > <EditText android:id="@+id/et_account" android:layout_width="match_parent" android:layout_height="wrap_content" android:textSize="20sp" android:hint="请输入账号 "/> <EditText android:id="@+id/et_password" android:layout_width="match_parent" android:layout_height="wrap_content" android:textSize="20sp" android:hint="请输入密码 "/> <RadioGroup android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/sex" android:orientation="horizontal"> <RadioButton android:id="@+id/sex_man" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="男" android:textSize="15sp" /> <RadioButton android:id="@+id/sex_woman" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="女" android:textSize="15sp" /> </RadioGroup> <Button android:id="@+id/btn_login" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="第一种传值方式:传递基本数据类型" android:onClick="clickLogin" android:textSize="20sp"/> <Button android:id="@+id/btn_login1" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="第二种传递方式:使用bundle传递基本数据" android:onClick="clickLogin" android:textSize="20sp"/> <Button android:id="@+id/btn_login2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="第三种传递方式:通过可序列化对象传值" android:onClick="clickLogin" android:textSize="20sp"/> <Button android:id="@+id/btn_login3" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="第四种传递方式:通过bundle传递可序列化对象" android:onClick="clickLogin" android:textSize="20sp"/> </LinearLayout>
MainActivity.java
package com.example.day05_intent_passvalue; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.text.TextUtils; import android.view.Menu; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.RadioButton; import android.widget.RadioGroup; public class MainActivity extends Activity { private EditText et_name; private EditText et_psd; private RadioGroup sex; private RadioButton sex_man; private RadioButton sex_woman; private Button btn_login; private Button btn_login1; private Button btn_login2; private Button btn_login3; private String name; private String psd; private int checkedRadioButtonId; private int sex1; /** * Intent传值: * 将Main1中输入的值传递到main2 * */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //初始化控件 initView(); } private void initView() { et_name = (EditText) findViewById(R.id.et_account); et_psd = (EditText) findViewById(R.id.et_password); sex = (RadioGroup) findViewById(R.id.sex); sex_man = (RadioButton) findViewById(R.id.sex_man); sex_woman = (RadioButton) findViewById(R.id.sex_woman); btn_login = (Button) findViewById(R.id.btn_login); btn_login1 = (Button) findViewById(R.id.btn_login1); btn_login2 = (Button) findViewById(R.id.btn_login2); btn_login3 = (Button) findViewById(R.id.btn_login3); } public void clickLogin(View v){ switch (v.getId()) { case R.id.btn_login: //传递基本数据类型 passBaseDate(); break; case R.id.btn_login1: //通过Bundle传递基本数据 passBaseDataByBundle(); break; case R.id.btn_login2: //传递可序列化对象 passSerializedObject(); break; case R.id.btn_login3: //通过Bundle传递可序列化对象 passSerializedObjectByBundle(); break; } } private void passSerializedObjectByBundle() { //获得数据 getData(); //创建Student对象,将数据封装成Student对象 Student s = new Student(name,psd,sex1); //创建一个Intent对象,设置跳转的activity Intent intent = new Intent(MainActivity.this,Activity2.class); //创建Bundle对象,将序列化对象设置到bundle对象中 Bundle bundle = new Bundle(); bundle.putSerializable("Student", s); //将bundle设置到intent对象中 intent.putExtra("BUNDLE",bundle); //开启另一个activity startActivity(intent); } private void passSerializedObject() { // TODO Auto-generated method stub getData(); Intent intent = new Intent(MainActivity.this,Activity2.class); Student s = new Student(name,psd,sex1); intent.putExtra("Student", s); startActivity(intent); } private void passBaseDataByBundle() { // TODO Auto-generated method stub //获得数据 getData(); //创建一个Intent对象,并设置其跳转的activity Intent intent = new Intent(MainActivity.this,Activity2.class); //创建Bundle对象,将值存入到Bundle对象中 Bundle extras = new Bundle(); extras.putString("NAME", name); extras.putString("PSD", psd); extras.putInt("SEX", sex1); //将bundle设置到intent中 intent.putExtra("BUNDLE",extras); //开启另一个activity startActivity(intent); } private void passBaseDate() { // TODO Auto-generated method stub //获得数据 //通过intent意图将数据传递过去 getData(); //1.创建intent意图 Intent intent = new Intent(); //2.指定需要开启的activity intent.setClass(MainActivity.this,Activity2.class); //3.设置需要传递的数据 intent.putExtra("NAME", name); intent.putExtra("PSD", psd); intent.putExtra("SEX", sex1); //4开启另一个activity startActivity(intent); } private void getData() { name = et_name.getText().toString().trim(); psd = et_psd.getText().toString().trim(); sex1 = -1; checkedRadioButtonId = sex.getCheckedRadioButtonId(); //利用安卓自带文本工具类判断文本数据是否为空 if(TextUtils.isEmpty(name)||TextUtils.isEmpty(psd)){ return; } if(checkedRadioButtonId==sex_man.getId()){ sex1 = 1; }else{ sex1 = 2; } } }
Activity2.java
package com.example.day05_intent_passvalue; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.text.TextUtils; import android.widget.TextView; public class Activity2 extends Activity{ private TextView tv; private String sex; private String name; private String psd; private int sexId; private String data; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.main2); tv = (TextView) findViewById(R.id.name); //data = getBaseDate(); //通过Bundle对象得到基本数据类型的数据 //data =getBaseDataByBundle(); //通过序列化对象得到数据 // data = getSerializedObject(); //通过Bundle对象得到序列化对象从而得到基本类型数据 data = getSerialzedObjectByBundle(); //设置文本显示的内容 tv.setText(data); } private String getSerialzedObjectByBundle() { //得到传过来的intent对象 Intent intent = getIntent(); //得到Bundle对象 Bundle bundle = intent.getBundleExtra("BUNDLE"); //通过bundle对象得到序列化对象 Student s = (Student) bundle.getSerializable("Student"); name = s.getName(); psd = s.getPsd(); sexId = s.getSex(); if(TextUtils.isEmpty(name)||TextUtils.isEmpty(psd)){ return null; } if(sexId==1){ sex = "男"; }else{ sex = "女"; } return "账号:"+name+",密码:"+psd+",性别:"+sex; } private String getSerializedObject() { // TODO Auto-generated method stub Intent intent = getIntent(); Student s = (Student) intent.getSerializableExtra("Student"); name = s.getName(); psd = s.getPsd(); sexId = s.getSex(); if(TextUtils.isEmpty(name)||TextUtils.isEmpty(psd)){ return null; } if(sexId==1){ sex = "男"; }else{ sex = "女"; } return "账号:"+name+",密码:"+psd+",性别:"+sex; } private String getBaseDataByBundle() { //得到传过来的Intent Intent intent = getIntent(); //获得Bundle数据 Bundle extras = intent.getBundleExtra("BUNDLE"); //通过Bundle对象得到基本类型数据 name = extras.getString("NAME"); psd = extras.getString("PSD"); sexId = extras.getInt("SEX"); if(TextUtils.isEmpty(name)||TextUtils.isEmpty(psd)){ return null; } if(sexId==1){ sex = "男"; }else{ sex = "女"; } return "账号:"+name+",密码:"+psd+",性别:"+sex; } private String getBaseDate() { //1.获得传过来的Intent Intent intent = getIntent(); name = intent.getStringExtra("NAME"); psd = intent.getStringExtra("PSD"); sexId = intent.getIntExtra("SEX", -1); if(TextUtils.isEmpty(name)||TextUtils.isEmpty(psd)){ return null; } if(sexId==1){ sex = "男"; }else{ sex = "女"; } return "账号:"+name+",密码:"+psd+",性别:"+sex; } }
