各位廣大的粉絲朋友們，我菜鳥工程師又來了之 AlertDialog & EditText 除蟲記

各位廣大的粉絲朋友們，就是要打字，怎麼樣之 AlertDialog & EditText的蟲蟲是不是讓你們坐立難安，我菜鳥工程師回來了，讓你們久等了，小蟲一隻，看下去就可以輕鬆解決。

1. 建立專案，除了名稱改為EX005，其他照抄

 2. 執行程式兩次後，漏格貓的錯誤訊息，removeView()要怎麼call阿!!!

10-07 14:08:15.105: E/AndroidRuntime(636): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

 

 3. Source Code

package com.example.ex005; import android.os.Bundle; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.view.Menu; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.TextView; public class MainActivity extends Activity {      private TextView tv;      private Button btn;           @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);                   tv = (TextView) MainActivity.this.findViewById(R.id.textView1);          btn = (Button) MainActivity.this.findViewById(R.id.button1);          final LinearLayout ll = new LinearLayout(this);          final EditText et = new EditText(this);          ll.setOrientation(LinearLayout.VERTICAL);          ll.addView(et);          btn.setOnClickListener(new Button.OnClickListener() {               @Override               public void onClick(View v) {                   // TODO Auto-generated method stub                   new AlertDialog.Builder(MainActivity.this)                            .setTitle("EX005")                            .setView(ll)                            .setPositiveButton("OK",                                      new DialogInterface.OnClickListener() {                                          @Override                                          public void onClick(DialogInterface dialog,                                                   int which) {                                               // TODO Auto-generated method stub                                               tv.setText(et.getText());                                               ((ViewGroup)ll.getParent()).removeView(ll);                                          }                                      })                            .setNegativeButton("Cancel",                                      new DialogInterface.OnClickListener() {                                          @Override                                          public void onClick(DialogInterface dialog,                                                   int which) {                                               // TODO Auto-generated method stub                                               ((ViewGroup)ll.getParent()).removeView(ll);                                          }                                      }).show();               }          });               }      @Override      public boolean onCreateOptionsMenu(Menu menu) {          // Inflate the menu; this adds items to the action bar if it is present.          getMenuInflater().inflate(R.menu.main, menu);          return true;      } }

 4. 重新執行程式，熱騰騰的畫面出現了

 
5. 第一次的親密接觸

 6.恭喜你，可以再點一次

 7. 當!當!當!當!...才怪，活得好好的

 8. 世界一片美好

各位廣大的粉絲朋友們，今天就演到這裡，不用太想念我，我菜鳥工程師很快就會再出現的。

範例 : EX005