Android 实现页面跳转

android使用Intent来实现页面跳转，Intent通过startActivity(Intent intent)或startActivityForResult(Intent intent,int resquestCode)方法来启动Activity，在新建Intent对象时来指定从A页面跳到B页面，

比如：

Intent i = new Intent(A.this,B.class);这就表示从A页面跳到B页面， 

Intent对象通过调用putExtra方法来传递页面跳转时所需要传递的信息

比如：

putExtra（“给需要传递的信息命名”，需要传递的信息的内容）

Intent通过调用getStringExtra方法来接受传递过来的信息

getStringExtra（“传递过来的信息的名字”）；

下面的代码将实现用户输入完信息之后点击登入按钮，页面将跳转到另一页面显示个人信息，然后在这个页面有一个返回按钮，点击返回按钮，页面将返回登入页面再次显示个人信息。

MainActivity.java

package com.example.hsy.register;
import android.content.Intent;
import android.support.annotation.IdRes;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
  EditText etName,etPwd;
  Button btnLogin;
  TextView tvShow;
  RadioGroup rg;
  RadioButton rbMale,rbFelMale;
  CheckBox checkbox1,checkbox2,checkbox3;
  Spinner spcity;
  String sex="";
  String hobby1="",hobby2="",hobby3="";
  String result="";
  String city="";
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.test);
    init();
    rglistener();
    btnloginlistener();
    box1listener();
    box2listener();
    box3listener();
    splistener();
  }
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    tvShow.setText("返回结果是："+"n"+data.getStringExtra("result1").toString()+
 "n");
  }
  private void splistener() {
    spcity.setonItemSelectedListener(new AdapterView.onItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView parent, View view, int position, long id) {
 city=(String) spcity.getSelectedItem();
      }
      @Override
      public void onNothingSelected(AdapterView parent) {
      }
    });
  }
  private void box3listener() {
    checkbox3.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
      @Override
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 if(isChecked){
   hobby3="看书";
 } else {
   hobby3="";
 }
      }
    });
  }
  private void box2listener() {
    checkbox2.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
      @Override
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 if(isChecked){
   hobby2="游泳";
 } else {
   hobby2="";
 }
      }
    });
  }
  private void box1listener() {
    checkbox1.setonCheckedChangeListener(new CompoundButton.onCheckedChangeListener() {
      @Override
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 if(isChecked){
   hobby1="唱歌";
 } else {
   hobby1="";
 }
      }
    });
  }
  private void btnloginlistener() {
    btnLogin.setonClickListener(new View.onClickListener(){
      @Override
      public void onClick(View v){
 result="用户名是:"+etName.getText().toString()+"n"+"密码是:"+
     etPwd.getText().toString()+"n"+"性别是:"+sex+"n"+"爱好是："+hobby1+" "
     +hobby2+" "+hobby3+" "+
 "n"+"所在城市："+city;
 //tvShow.setText(result);
 Intent i = new Intent(MainActivity.this,Main2Activity.class);
 i.putExtra("data1",result);
 startActivityForResult(i,0);
      }
    });
  }
  private void rglistener() {
    rg.setonCheckedChangeListener(new RadioGroup.onCheckedChangeListener(){
      @Override
      public void onCheckedChanged(RadioGroup group, @IdRes int checkedId){
 if(checkedId== R.id.rbMale)
   sex="男生";
 else
   sex="女生";
      }
    });
  }
  private void init() {
    etName=(EditText) findViewById(R.id.etName);
    etPwd=(EditText) findViewById(R.id.etPwd);
    btnLogin=(Button) findViewById(R.id.btnLogin);
    tvShow=(TextView) findViewById(R.id.tvShow);
    rg=(RadioGroup) findViewById(R.id.rg);
    rbMale=(RadioButton) findViewById(R.id.rbMale);
    rbFelMale=(RadioButton) findViewById(R.id.rbFeMale);
    checkbox1=(CheckBox) findViewById(R.id.checkbox1);
    checkbox2=(CheckBox) findViewById(R.id.checkbox2);
    checkbox3=(CheckBox) findViewById(R.id.checkbox3);
    spcity=(Spinner) findViewById(R.id.Spcity);
  }
}

MainActivity2.java

package com.example.hsy.register;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class Main2Activity extends AppCompatActivity {
  TextView tvShow;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);
    tvShow=(TextView)findViewById(R.id.tvShow);
    Intent intent = getIntent();
    tvShow.setText(intent.getStringExtra("data1").toString());
    findViewById(R.id.btnBack).setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View v) {
 Intent intent1=new Intent(Main2Activity.this,MainActivity.class);
 intent1.putExtra("result1",tvShow.getText().toString());
 setResult(1,intent1);
 finish();
      }
    });
  }
}

test.xml

activity_main2.xml

总结

以上所述是小编给大家介绍的Android 实现页面跳转，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！