[英]Sending arrays with Intent.putExtra
I have an array of integers in the activity A: 我在活动A中有一个整数数组:
int array[] = {1,2,3};
And I want to send that variable to the activity B, so I create a new intent and use the putExtra method: 我想将该变量发送到活动B,因此我创建了一个新的intent并使用了putExtra方法:
Intent i = new Intent(A.this, B.class);
i.putExtra("numbers", array);
startActivity(i);
In the activity BI get the info: 在活动BI中获取信息:
Bundle extras = getIntent().getExtras();
int arrayB = extras.getInt("numbers");
But this is not really sending the array, I just get the value '0' on the arrayB. 但这并不是真的发送数组,我只是在arrayB上得到值'0'。 I've been looking for some examples but I didn't found anything so. 我一直在寻找一些例子,但我没有发现任何事情。
You are setting the extra with an array. 您正在使用数组设置额外的。 You are then trying to get a single int. 然后你试图得到一个int。
Your code should be: 你的代码应该是:
int[] arrayB = extras.getIntArray("numbers");
This code sends array of integer values 此代码发送整数值数组
Initialize array List 初始化数组列表
List<Integer> test = new ArrayList<Integer>();
Add values to array List 将值添加到数组列表
test.add(1);
test.add(2);
test.add(3);
Intent intent=new Intent(this, targetActivty.class);
Send the array list values to target activity 将数组列表值发送到目标活动
intent.putIntegerArrayListExtra("test", (ArrayList<Integer>) test);
startActivity(intent);
here you get values on targetActivty 在这里你可以获得targetActivty的值
Intent intent=getIntent();
ArrayList<String> test = intent.getStringArrayListExtra("test");
final static String EXTRA_MESSAGE = "edit.list.message";
Context context;
public void onClick (View view)
{
Intent intent = new Intent(this,display.class);
RelativeLayout relativeLayout = (RelativeLayout) view.getParent();
TextView textView = (TextView) relativeLayout.findViewById(R.id.textView1);
String message = textView.getText().toString();
intent.putExtra(EXTRA_MESSAGE,message);
startActivity(intent);
}
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