将变量值传递给另一个 TextView Activity

Question

作为一个Activity的一个变量的步长值对于一个TextView的其他Activity？可以帮忙吗？

谢谢！

（（见图片说明））

Answer 1

最简单的方法是使用 Intent: in first Activity

Intent intent =new Intent(CurrentClass.this,DisClass.class);
intent.putExtra("myTextValue",textView.getText().toString());
startActivity(intent);

在 dist 活动中执行以下操作：

String myValue=getIntent().getExtra().getString("myTextValue");
textView.setText(myValue);

Answer 2

您可以使用本地广播接收器。

Activity B 中的第一个注册接收者

  //in onCreate Method 
  LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                    new IntentFilter("my-event-name"));


// It will be called whenever an Intent
// with an action named "my-event-name" is broadcasted.

 private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
 @Override
 public void onReceive(Context context, Intent intent) {
    // Get extra data included in the Intent
     String message = intent.getStringExtra("message");
   // show this message in textview 
 }
};

在活动 A 中

//broadcast this 
Intent intent = new Intent("my-event-name");
intent.putExtra("message", Integer(sumSettlment).toString());
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);

Answer 3

Intent activityTwo = new Intent(this, Activity2.class);
activityTwo.putIntExtra("key", sumSettlement);
startActivity(activityTwo);

现在，Activity2：

if(getIntent() != null) {
    textView.setText(String.valueOf(getIntent.getExtra("key"));
}