1、主Activity里有兩個Button，點擊每個Button都調用第二個NewActivity。

2、從NewActivity里返回后，判斷是從兩個Button中的哪一個啟動的NewActivity，并顯示在TextView或者Toast上。

?

MainActivity

package com.example.intenttest;import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; import android.widget.Toast;public class MainActivity extends Activity {private Button btn1, btn2;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);btn1 = (Button) findViewById(R.id.bnt1);btn2 = (Button) findViewById(R.id.bnt2);btn1.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View arg0){// TODO Auto-generated method stubstartActivityForResult(new Intent(MainActivity.this, NewActivity.class), 1);}});btn2.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View arg0){// TODO Auto-generated method stubstartActivityForResult(new Intent(MainActivity.this, NewActivity.class), 2);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data){// TODO Auto-generated method stubswitch (requestCode){case 1 :Toast.makeText(MainActivity.this, "第一個Button", Toast.LENGTH_SHORT).show();break;case 2 :Toast.makeText(MainActivity.this, "第二個Button", Toast.LENGTH_SHORT).show();break;default :break;}}}

?

NewActivity

package com.example.intenttest;import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.Window;public class NewActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState){// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.new_activity);setResult(RESULT_OK, new Intent().putExtra("result", "返回的數據"));}}

轉載于:https://www.cnblogs.com/qq28902581/p/4510102.html

總結

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