Android studio getIntent().getStringExtra() 返回 null [英] Android studio getIntent().getStringExtra() returns null

问题描述

我想将一个活动的值发送到另一个活动.

I want to send a value from one activity to another.

值是从第一个活动发送的:

The value is sent from this first Activity:

 // Tout est Ok
Intent intent = new Intent(getApplicationContext(), SetNewPassword.class);
intent.putExtra("number", phone);

startActivity(intent);
finish(); 

我想在第二个活动中接收值，但是当我尝试在 Toast 中显示该值时，它显示 null:

I want to receive the value in this second Activity, but when i try to display the value in a toast it displays null:

phone = getIntent().getStringExtra("number");

Toast.makeText(SetNewPassword.this, phone, Toast.LENGTH_SHORT).show();

推荐答案

 // get the text to pass
    EditText editText = (EditText) findViewById(R.id.editText);
    String textToPass = editText.getText().toString();

    // start the SecondActivity
    Intent intent = new Intent(this, SecondActivity.class);
    intent.putExtra(Intent.EXTRA_TEXT, textToPass);
    startActivity(intent);

在第二个活动中

   // get the text from MainActivity
    Intent intent = getIntent();
    String text = intent.getStringExtra(Intent.EXTRA_TEXT);

你的数据类型有问题.检查这个或分享你的完整代码.

you have problem in data type .check this or share your full code .

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