1个活动的多个onActivityResult [英] Multiple onActivityResult for 1 Activity
问题描述
所以我有一个正在使用的非常简单的应用程序.目的是从1台PC和1或2个监视器收集资产数据. 我的表单包含3个edittext视图和3个按钮(每个我要为其收集数据的资产一个).这些按钮调用条形码扫描仪的startActivityForResult，然后我要根据按下的按钮将结果传递到关联的edittext视图(例如:按下"Asset-PC" edittext右侧的"scan"按钮，扫描并返回数据)然后单击"Asset-Mon1"编辑文本旁边的扫描"按钮，将数据返回到"Asset-Mon1"编辑文本....依此类推...)
So I have a very simple app I am working on. It's purpose is to collect asset data from 1 pc, and 1 or 2 monitors. My form contains 3 edittext views, and 3 buttons (one for each asset I am collecting data for). The buttons invoke startActivityForResult for the barcode scanner, then I want to pass the result to the associated edittext view based on which button was pressed (example: press "scan" button to the right of "Asset - PC" edittext, scan and return data to it's associated edittext. Then if you press the button "scan" thats next to the "Asset - Mon1" edittext, return data to "Asset - Mon1" edittext.... and so on...)
使用这里的代码，所有项目都可以正常工作，只是不符合预期.按下任何扫描"按钮总是会将结果返回到第一个编辑文本视图资产-PC".
With the code I have here, all the items work, just not as intended. Pressing any of the "scan" buttons always returns the result to the first edittext view "Asset - PC".
public class TestShit extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void assetPcClick(View view) {
Intent intent1 = new Intent("com.google.zxing.client.android.SCAN");
intent1.setPackage("com.google.zxing.client.android");
intent1.putExtra("SCAN_MODE", "ONE_D_MODE");
startActivityForResult(intent1, 0);
}
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents1 = intent.getStringExtra("SCAN_RESULT");
String format1 = intent.getStringExtra("SCAN_RESULT_FORMAT");
EditText assetPC = (EditText) findViewById(R.id.assetPC);
assetPC.setText(contents1);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
}
public void assetMon1Click(View view) {
Intent intent2 = new Intent("com.google.zxing.client.android.SCAN");
intent2.setPackage("com.google.zxing.client.android");
intent2.putExtra("SCAN_MODE", "ONE_D_MODE");
startActivityForResult(intent2, 0);
}
public void onActivityResult2(int requestCode, int resultCode, Intent intent2) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents2 = intent2.getStringExtra("SCAN_RESULT");
String format2 = intent2.getStringExtra("SCAN_RESULT_FORMAT");
EditText assetMon1 = (EditText) findViewById(R.id.assetMon1);
assetMon1.setText(contents2);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
}
public void assetMon2Click(View view) {
Intent intent3 = new Intent("com.google.zxing.client.android.SCAN");
intent3.setPackage("com.google.zxing.client.android");
intent3.putExtra("SCAN_MODE", "ONE_D_MODE");
startActivityForResult(intent3, 0);
}
public void onActivityResult3(int requestCode, int resultCode, Intent intent3) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents3 = intent3.getStringExtra("SCAN_RESULT");
String format3 = intent3.getStringExtra("SCAN_RESULT_FORMAT");
EditText assetMon2 = (EditText) findViewById(R.id.assetMon2);
assetMon2.setText(contents3);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
}
}
关于如何更好地管理多个"ActivityForResult"和"onActivityResult"的任何建议?
Any suggestions on how I can better manage my multiple "ActivityForResult" and "onActivityResult" 's ?
我的解决方法，谢谢您的所有帮助！
My fix, thank you for all your help!
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents1 = intent.getStringExtra("SCAN_RESULT");
String format1 = intent.getStringExtra("SCAN_RESULT_FORMAT");
EditText assetPC = (EditText) findViewById(R.id.assetPC);
assetPC.setText(contents1);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
if (requestCode == 1) {
if (resultCode == RESULT_OK) {
String contents1 = intent.getStringExtra("SCAN_RESULT");
String format1 = intent.getStringExtra("SCAN_RESULT_FORMAT");
EditText assetMon1 = (EditText) findViewById(R.id.assetMon1);
assetMon1.setText(contents1);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
if (requestCode == 2) {
if (resultCode == RESULT_OK) {
String contents1 = intent.getStringExtra("SCAN_RESULT");
String format1 = intent.getStringExtra("SCAN_RESULT_FORMAT");
EditText assetMon2 = (EditText) findViewById(R.id.assetMon2);
assetMon2.setText(contents1);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
}
推荐答案
在您的startActivityForResult中，不要在两个呼叫中都使用0. 1 ...然后您可以使用requestCode在onActivityResult方法中实现一个开关.如果requestCode = 0，则第一个方法已返回；如果为1，则第二个方法已返回.对于更多的呼叫，应该是相同的.
In your startActivityForResult, don't use 0's on both calls... use different numbers like 0 & 1... then you can implement a switch in your onActivityResult method with the requestCode. If the requestCode = 0 then the first method has returned, if it is 1, then the second has returned. This should be the same for more calls.
public void onActivityResult(int requestCode, int resultCode, Intent intent){
switch(requestCode){
case 0: // Do your stuff here...
break;
case 1: // Do your other stuff here...
break;
case etc:
break;
}
}
然后，调用应该是这样的: (第一次)
The calls should be something like this then: (For the first time)
startActivityForResult(intent1, 0);
(第二次)
startActivityForResult(intent2, 1);
(第三次)
startActivityForResult(intent3, 2);
(第n次)
startActivityForResult(intentn, n - 1);
或者，您可以声明要使用的静态int值，而不是无法识别的int值.
Or, you could declare static int values to use, instead of the more unrecognisable int values.
这篇关于1个活动的多个onActivityResult的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
