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我在我的 oncreate 中有一个带有复选框的对话框。如果选中此复选框，则下次打开应用程序时不会显示对话框。我已将复选框状态保存在 sharedpreferences 中，它会显示我是否选中了复选框，但对话框在启动时仍打开..怎么了？

编辑

// 对话框视图 checkBoxView = View.inflate(this, R.layout.checkbox, null); CheckBox checkBox = (CheckBox) checkBoxView.findViewById(R.id.checkbox); checkBox.setChecked(getFromSP("checkBox"));

checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

private void saveInSp(String key,boolean value){
    SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = preferences.edit();
    editor.putBoolean(key, value);
    editor.commit();
}
    @Override
    public void onCheckedChanged(CompoundButton buttonView,
            boolean isChecked) {
        // TODO Auto-generated method stub
        switch(buttonView.getId()){
        case R.id.checkbox:
        saveInSp("checkBox",isChecked);

        break;
        }
    }
}); 
checkBox.setText("Never show it");

SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);

boolean hasBeenChecked = preferences.getBoolean("checkbox", false);

if (!hasBeenChecked) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(" TITLE");
    builder.setMessage(" blablabla ")
           .setView(checkBoxView)
           .setCancelable(false)

           .setNeutralButton("Ok", new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                    dialog.cancel();
               }
           }).show();

    }
4

2 回答 2

1

在调用 AlertDialog.show() 之前，您必须检查您保存的值是否为共享首选项。

例子：

AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle(" TITLEs");
            builder.setMessage(" blablabla ")
                   .setView(checkBoxView)
                   .setCancelable(false)

                   .setNeutralButton("Ok", new DialogInterface.OnClickListener() {
                       public void onClick(DialogInterface dialog, int id) {
                            dialog.cancel();
                       }
                   }).show();

AlertDialog dialog = builder.create();

if (getFromSP("checkBox")) {
   dialog.show();
}
于 2013-09-18T18:02:51.633 回答
1

我会：

  • （非必要）例如saveInSp从匿名中删除OnCheckedChangeListener并将其添加到活动中
  • （非必要）您可以saveInSp通过引用从侦听器调用MyActivity.this.saveInSp

  • 然后，在初始化和显示警报之前...

    SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);

boolean hasBeenChecked = preferences.getBoolean("checkBox", false);

if (!hasBeenChecked) {

AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(" TITLEs");
    builder.setMessage(" blablabla ")
           .setView(checkBoxView)
           .setCancelable(false)

           .setNeutralButton("Ok", new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                    dialog.cancel();
               }
           }).show();
}
于 2013-09-18T18:10:39.843 回答