Android跳轉intent簡單教程

跳轉的方法：

1）簡單跳轉，沒有帶參的：

private void onClickLisener() {

// TODO Auto-generated method stub

btn_login_register.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

                                //意圖、意向,參數1：表示當前在哪里，參數二:跳轉到哪里

Intent intent=new Intent(MainActivity.this,Register.class);

                                //啟動意圖

MainActivity.this.startActivity(intent);

                                //關閉當前activity

                                MainActivity.this.finish();

}

});

1）  帶參數跳

btn_register_reg.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

Intent intent=new Intent(Register.this,MainActivity.class);

String username=et_register_username.getText().toString();

String password=et_register_password.getText().toString();

int a=username.trim().length();

int b=password.trim().length();

if(a>0 && b>0){

intent.putExtra("username", username);

intent.putExtra("password", password);

startActivity(intent);

Register.this.finish();

}else{

//Toast.makeText(Register.this,"請輸入用戶名和大於8小於16位的密碼；", 2000);

                                        System.out.println("錯誤！");

}

}

});

//接收參數：

private void intent() {

// TODO Auto-generated method stub

Intent intent=getIntent();

String username=intent.getStringExtra("username");

String password=intent.getStringExtra("password");

et_login_user.setText(username);

et_login_password.setText(password);

System.out.println(username);

System.out.println(password);

}