在DialogManager代码中使用private Dialog dialog；好像有问题，代码不错就是包空指针异常，使用AlertDialog.Builder解决了这个问题：
package com.xuliugen.weichat.view;
import android.app.AlertDialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.xuliugen.weichat.R;
/**
* 用于管理Dialog
*
* @author xuliugen
*
*/
public class DialogManager {
private AlertDialog.Builder builder;
private ImageView mIcon;
private ImageView mVoice;
private TextView mLable;
private Context mContext;
private AlertDialog dialog;//用于取消AlertDialog.Builder
/**
* 构造方法 传入上下文
*/
public DialogManager(Context context) {
this.mContext = context;
}
// 显示录音的对话框
public void showRecordingDialog() {
builder = new AlertDialog.Builder(mContext, R.style.AudioDialog);
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.dialog_recorder,null);
mIcon = (ImageView) view.findViewById(R.id.id_recorder_dialog_icon);
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();
}
public void recording(){
if(dialog != null && dialog.isShowing()){ //显示状态
mIcon.setVisibility(View.VISIBLE);
mVoice.setVisibility(View.VISIBLE);
mLable.setVisibility(View.VISIBLE);
mIcon.setImageResource(R.drawable.recorder);
mLable.setText("手指上滑，取消发送");
}
}
// 显示想取消的对话框
public void wantToCancel() {
if(dialog != null && dialog.isShowing()){ //显示状态
mIcon.setVisibility(View.VISIBLE);
mVoice.setVisibility(View.GONE);
mLable.setVisibility(View.VISIBLE);
mIcon.setImageResource(R.drawable.cancel);
mLable.setText("松开手指，取消发送");
}
}
// 显示时间过短的对话框
public void tooShort() {
if(dialog != null && dialog.isShowing()){ //显示状态
mIcon.setVisibility(View.VISIBLE);
mVoice.setVisibility(View.GONE);
mLable.setVisibility(View.VISIBLE);
mIcon.setImageResource(R.drawable.voice_to_short);
mLable.setText("录音时间过短");
}
}
// 显示取消的对话框
public void dimissDialog() {
if(dialog != null && dialog.isShowing()){ //显示状态
dialog.dismiss();
dialog = null;
}
}
// 显示更新音量级别的对话框
public void updateVoiceLevel(int level) {
if(dialog != null && dialog.isShowing()){ //显示状态
mIcon.setVisibility(View.VISIBLE);
mVoice.setVisibility(View.VISIBLE);
mLable.setVisibility(View.VISIBLE);
//设置图片的id
int resId = mContext.getResources().getIdentifier("v"+level, "drawable", mContext.getPackageName());
mVoice.setImageResource(resId);
}
}
}
