java - 如何将 Alertdialog 添加到我的 Android 应用程序？

Question

我想向我的 Android 应用程序添加是/否对话框，我尝试了解决方案 in this answer但我无法让它与我的代码一起工作，有什么帮助吗？

这是我的代码，我想在其中从 EditText 写入文本。

    public void buttonSelect( View v ) {
    View view = null;
    String mac1 = "mac1";
    String mac2 = "mac2";

    TextView tv1, tv2;
    tv1 = (TextView) findViewById(R.id.textView1);
    tv2 = (TextView) findViewById(R.id.textView2);

    switch (v.getId()) {
    case (R.id.Write_MAC1):
        writeData(view, mac1); //I need to confirm writing the data
    break;

    case (R.id.Write_MAC2):
        writeData(view, mac2); //I need to confirm writing the data
    break;

    }
}

 //---------------------------- Writing MACs addresses Function --------------------------------------------   

public void writeData(View view, String macNum)
{
    BufferedWriter bufferWriter =null;
    try {
        FileOutputStream fileOutputStream = openFileOutput(macNum, Context.MODE_PRIVATE);
        bufferWriter = new BufferedWriter(new OutputStreamWriter(fileOutputStream));

        if (macNum.equals("mac1")){         
           bufferWriter.write(((EditText)this.findViewById(R.id.editText1)).getText().toString());}

        if (macNum.equals("mac2")){         
               bufferWriter.write(((EditText)this.findViewById(R.id.editText2)).getText().toString());}                 

    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }finally
    {
        try {
            bufferWriter.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

Answer 1

尝试使用这个:

AlertDialog.Builder alertbox = new AlertDialog.Builder(LauncherActivity.this);
alertbox.setTitle("Are you sure?");
alertbox.setPositiveButton("YES", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(LauncherActivity.this, "You Choose Yes!!", Toast.LENGTH_LONG).show();
}
});
alertbox.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(LauncherActivity.this, "You Choose Nooo!!", Toast.LENGTH_LONG).show();
}
});
alertbox.show();

查看此git repo

此存储库中还存在一个自定义警报对话框示例。