android自定义dialog宽度,android 设置自定义dialog大小无效果

public PicDialog create() {

LayoutInflater inflater = (LayoutInflater) mActivity

.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

final PicDialog dialog = new PicDialog(mActivity, R.style.customDialog);

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

//先设置宽高，最后再setContentView

layout.setMinimumWidth((int) (mActivity.getWindowManager()

.getDefaultDisplay().getWidth() * 0.8));//设置dialog的宽度

dialog.addContentView(layout, new ViewGroup.LayoutParams(//设置dialog

ViewGroup.LayoutParams.WRAP_CONTENT,

ViewGroup.LayoutParams.WRAP_CONTENT));

dialog.setCancelable(true);

if (!StringUtil.isEmptyOrNull(titleText)){

((TextView)layout.findViewById(R.id.tv_view_pic_dialog_title)).setText(titleText);

}

if (!StringUtil.isEmptyOrNull(topText)){

TextView topTextView = ((TextView)layout.findViewById(R.id.tv_view_pic_dialog_top));

topTextView.setText(topText);

topTextView.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

positiveButtonClickListener.onClick(dialog,

1);

}

});

}

if (!StringUtil.isEmptyOrNull(bomText)){

TextView bomTextView = ((TextView)layout.findViewById(R.id.tv_view_pic_dialog_bom));

bomTextView.setText(bomText);

bomTextView.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

negativeButtonClickListener.onClick(dialog,

2);

}

});

}

dialog.setContentView(layout);

return dialog;

}