Android(安卓)studio 三个界面之间跳转程序代码

Android studio 三个界面之间跳转程序代码

功能介绍：
点击第一个按钮 OK 跳转到第二个界面，点击图标第二个界面跳转到第三个界面

界面一：

界面二：

界面三：

第一个界面的代码

activity_main.xml

             //字体大小

MainActivity.java

private Button mBtnJumpToSecondActivity;  //设置私有Button变量mBtnJumpToSecondActivity@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    initView();}private void initView() {    mBtnJumpToSecondActivity = (Button) findViewById(R.id.btn_jumpToSecondActivity);  //先找到这个变量    mBtnJumpToSecondActivity.setOnClickListener(this);   //再设置点击事件}@Overridepublic void onClick(View v) {    switch (v.getId()) {        case R.id.btn_jumpToSecondActivity:              jumpToSecondActivity();   //跳转到第二个Activity            break;      }}private void jumpToSecondActivity() {    Intent mIntent = new Intent("cn.edu.sziit.chapter2_firstactivity.ACTION_START");    startActivity(mIntent);}

第二个界面代码

activity_second.xml

      //文字大小25sp

SecondActivity.java

private Button mJumpToFirstActivity;                  //设置私有变量mJumpToFirstActivity@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_second);    initView();}private void initView() {    mJumpToFirstActivity = (Button) findViewById(R.id.jumpToThirdActivity);   //找到这个变量    mJumpToFirstActivity.setOnClickListener(this);      //设置点击事件}@Overridepublic void onClick(View v) {    switch (v.getId()) {        case R.id.jumpToThirdActivity:            jumpToThirdActivity();        //跳转至第三个界面            break;    }}private void jumpToThirdActivity() {    Intent mIntent = new Intent(this, ThirdActivity.class);    startActivity(mIntent);}

第三个界面代码

activity_third.xml

                      //文字大小

ThirdActivity.java

@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_third);}

Android studio 三个界面之间跳转程序代码

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