startActivityForResult
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FirstActivity——>SecondActivity
在FirstActivity中:Intent intent = new Intent(this, SecondActivity.class);startActivityForResult(intent, 0); //请求码在SecondActivity中:Intent intent= new Intent();intent.putExtra("text", text);//要传递的数据setResult(0, intent);//结果码finish();回到FirstActivity://requestCode:请求码//resultCode:结果码 可以与上面的请求码和结果码做判断处理@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {// 在第二个界面关闭的时候调用,返回数据放在data里面if (data != null) {String text = data.getStringExtra("text");//text为返回携带的数据}super.onActivityResult(requestCode, resultCode, data);}
Intent Intent = new Intent(mContext,SecondActivity.class);startActivityForResult(Intent, FinalConstants.TEST_REQUEST);Intent it = new Intent();it.putExtra("test",str);setResult(Activity.RESULT_OK, it);finish();/** 回传处理 */@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); // 判断是否请求成功 boolean isResultOk = (Activity.RESULT_OK == resultCode); // 获取请求code switch(requestCode){ case FinalConstants.TEST_REQUEST: if(isResultOk){ //判断了请求码和结果码 也可只对其中之一做判断 String str = data.getStringExtra("test"); //TODO } break; }}
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