我有一个警告对话框，我将使用 TextView 获取文本，但是当我第二次调用它时，应用程序因错误而崩溃:
04-15 19:37:48.433: E/AndroidRuntime(907): java.lang.IllegalStateException:
The specified child already has a parent. You must call removeView() on
the child's parent first.
我的 Java 源代码:
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final RelativeLayout rLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
Button btn1 = (Button) findViewById(R.id.button1);
final AlertDialog.Builder build = new AlertDialog.Builder(MainActivity.this);
build.setTitle("Ders Adı Giriniz");
final EditText dersAdiGir = new EditText(MainActivity.this);
build.setView(dersAdiGir);
final LinearLayout layoutDers = (LinearLayout) findViewById(R.id.layoutDers);
build.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Editable girilenDers = dersAdiGir.getText();
TextView tv1 = new TextView(MainActivity.this);
tv1.setText(girilenDers);
layoutDers.addView(tv1);
dialog.dismiss();
build.create();
}
});
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog alert = build.create();
alert.show();
}
});
}
}
请帮帮我，谢谢大家
最佳答案
您正在创建 AlertDialog 的新实例每个按钮点击。创建最终 AlertDialog在OnClickListener之外内部类。
修复方法如下:
final AlertDialog alert = build.create();
btn1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
alert.show();
}
});
关于java - 您必须首先使用 AlertView 在 child 的 parent 上调用 removeView()，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29660994/