对话框的实现

对话框.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="20dp"
    android:gravity="center"
    android:background="@drawable/dialog_loading_bg"
    android:orientation="vertical" >

    <LinearLayout 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <ImageView 
            android:id="@+id/id_recorder_icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/recorder"
            android:visibility="visible"
            />
        <ImageView 
            android:id="@+id/id_recorder_voice"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/v1"
            android:visibility="visible"/>
        
    </LinearLayout>
    <TextView 
        android:id="@+id/id_recorder_text_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_recorder_up_cancel"
        android:textColor="#ffffff"
        android:layout_marginTop="5dp"
        />

</LinearLayout>

DialogManager.java

package com.sjy.myrecorder.view;

import java.security.KeyStore.PrivateKeyEntry;

import com.sjy.myrecorder.R;

import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

public class DialogManager {
    private Dialog mDialog;
    
    private ImageView mRecorder;
    private ImageView mVoice;
    private TextView mLabel;
    private Context mContext;
    public DialogManager(Context context) {
        mContext = context;
        
    }
    //显示对话框
    public void showDialog() {
        mDialog = new Dialog(mContext,R.style.Theme_AudioDialog);
        LayoutInflater inflater = LayoutInflater.from(mContext);
        
        View view = inflater.inflate(R.layout.dialog_recorder, null);
        mDialog.setContentView(view);
        
        mRecorder = (ImageView) mDialog.findViewById(R.id.id_recorder_icon);
        mVoice = (ImageView) mDialog.findViewById(R.id.id_recorder_voice);
        mLabel = (TextView) mDialog.findViewById(R.id.id_recorder_text_label);
        
        mDialog.show();
    }
    //显示想要取消的对话框
    public void wantToCancel() {
        
        if(mDialog != null && mDialog.isShowing()) {
            mRecorder.setVisibility(View.VISIBLE);
            mVoice.setVisibility(View.GONE);
            mLabel.setVisibility(View.VISIBLE);
            
            mRecorder.setImageResource(R.drawable.cancel);
            mLabel.setText(R.string.str_recorder_want_cancel);  
        }
        
    }
    //显示正在录音时的对话框
    public void recording() {
        if(mDialog != null && mDialog.isShowing()) {
            mRecorder.setVisibility(View.VISIBLE);
            mVoice.setVisibility(View.VISIBLE);
            mLabel.setVisibility(View.VISIBLE);
            
            mRecorder.setImageResource(R.drawable.recorder);
            mLabel.setText(R.string.str_recorder_up_cancel);
            
        }
    }
    //显示录音时间太短的对话框
    public void tooShort() {
        if(mDialog != null && mDialog.isShowing()) {
            mRecorder.setVisibility(View.VISIBLE);
            mVoice.setVisibility(View.GONE);
            mLabel.setVisibility(View.VISIBLE);
            
            mRecorder.setImageResource(R.drawable.voice_to_short);
            mLabel.setText(R.string.str_recorder_up_cancel);
        }
    }
    //对话框消失
    public void dismissDialog() {
        if(mDialog != null && mDialog.isShowing()) {
            mDialog.dismiss();
            mDialog = null;
        }
    }
    //更新对话框中的声音级别
    public void updateVoiceLevel(int level) {
        if(mDialog != null && mDialog.isShowing()) {
        
            //第一个参数为ID名，第二个为资源属性是ID或者是Drawable，第三个为包名。 
            int resId = mContext.getResources().getIdentifier("v" + level, "drawable", mContext.getPackageName());
            mVoice.setImageResource(resId);
        }
    }
}