1Intent实现数据通信

Intent实现数据通信一、基本用法2基本用法：

//显式跳转

Intentintent=newIntent(Activity甲.this,Activity乙.class);

startActivity(intent);

//传递参数

Intentintent=newIntent(Activity甲.this,Activity乙.class);

intent.putExtra(“参数名”,“要传的价值，可以是任何类型”);

startActivity(intent);

//获取参数，在目标Activity中

Intentintent=getIntent();

Stringdata=intent.getStringExtra("参数名");二、实现步骤3实现效果：输入内容，点击提交二、实现步骤4privateEditTextname,age;

privateButtonsub,reg;

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

name=(EditText)findViewById(R.);

age=(EditText)findViewById(R.id.age);

sub=(Button)findViewById(R.id.submit);

reg=(Button)findViewById(R.id.reg);

sub.setOnClickListener(newView.OnClickListener(){

@Override

publicvoidonClick(Viewview){

Intentintent=newIntent(MainActivity.this,DiaochaActivity.class);

intent.putExtra("name",name.getText().toString());

intent.putExtra("age",age.getText().toString());

startActivity(intent);

name.setText("");

age.setText("");

}

});

reg.setOnClickListener(newView.OnClickListener(){

@Override

publicvoidonClick(Viewview){

name.setText("");

age.setText("");

}

});

}MainActivity.java代码：二、实现步骤5privateTextView_name,_age;

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_diaocha);

Intentintent=getIntent();

Stringname=intent.getStringExtra("name");

Stringage=intent.getStringExtra("age");

_name=(TextView)findViewById(R.id._name);

_age=(TextView)findViewById(R.id._age);

_name.setText("名称："+name);

_age.setText("年龄："+age);

}DiaochaActivity.jav