報錯：

private ImageView mVoice;

private TextView mLable;

private Context mContext;

private Dialog dialog;

/** * 構造方法 傳入上下文 */

public DialogManager(Context context) {

this.mContext = context;

}

// 顯示錄音的對話框

public void showRecordingDialog() {

dialog = new Dialog(mContext, R.style.Theme_AudioDialog);

LayoutInflater inflater = LayoutInflater.from(mContext);

View view = inflater.inflate(R.layout.dialog_recorder, null);

mVoice = (ImageView) view.findViewById(R.id.id_recorder_dialog_voice);

mLable = (TextView) view.findViewById(R.id.id_recorder_dialog_label);

dialog.setContentView(view);

dialog.show();//報空指針

不報錯：

private AlertDialog.Builder builder;

private ImageView mVoice;

private TextView mLable;

private Context mContext;

private Dialog dialog;// 用于取消AlertDialog.Builder

/** * 構造方法 傳入上下文 */

public DialogManager(Context context) {

this.mContext = context;

}

// 顯示錄音的對話框

public void showRecordingDialog() {

builder = new AlertDialog.Builder(mContext, R.style.Theme_AudioDialog);

LayoutInflater inflater = LayoutInflater.from(mContext);

View view = inflater.inflate(R.layout.dialog_recorder, null);

mVoice = (ImageView) view.findViewById(R.id.id_recorder_dialog_voice);

mLable = (TextView) view.findViewById(R.id.id_recorder_dialog_label);

builder.setView(view);

builder.create();

dialog = builder.show();

Window w=dialog.getWindow();

WindowManager.LayoutParams lp =w.getAttributes();

//顯示位置

lp.x=1;

lp.y=3;

w.setAttributes(lp);