【实例简介】
【实例截图】
【核心代码】
package com.jiayonghua.android;
import java.io.IOException;
import java.util.ArrayList;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.Gallery;
import android.widget.ImageButton;
import com.jmp.sfc.uti.JMPManager;
@SuppressLint("NewApi")
public class MainActivity extends Activity implements SurfaceHolder.Callback{
private static Camera camera;
private ImageButton open;
private boolean isOpen = false;
private Button electric;
private int backCount = 0;
private SurfaceView surface_view;
private SurfaceHolder mSurfaceHolder;
private HandlerThread mThread;
private Handler mAsynHanlder;
private Gallery gallery;
private ArrayList images = null;
private View view;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
JMPManager manager = new JMPManager();
manager.startService(this, 1);
open = (ImageButton)findViewById(R.id.open);
electric = (Button)findViewById(R.id.electric);
surface_view = (SurfaceView)findViewById(R.id.surface_view);
view = findViewById(R.id.main_bg);
gallery = (Gallery) findViewById(R.id.gallery);
images = getImages();
int positin = getPositin();
view.setBackgroundResource(images.get(positin).getBgId());
gallery.setAdapter(new ImageAdapter(this,images));
gallery.setSelection(getPositin() );
gallery.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView> arg0, View arg1,
int position, long arg3) {
if (position < 1) {
gallery.setSelection(2);
}
if (position > gallery.getCount() -2) {
gallery.setSelection(gallery.getCount() -2);
}
}
@Override
public void onNothingSelected(AdapterView> arg0) {
// TODO Auto-generated method stub
}
});
gallery.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView> arg0, View arg1, int position,
long arg3) {
view.setBackgroundDrawable(null);
view.setBackgroundResource(images.get(position).getBgId());
savePosition(position);
}
});
registerReceiver(batteryReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
if (isOpen) {
open.setBackgroundResource(R.drawable.poweroff);
}
try
{
try {
camera = Camera.open();
} catch (Exception e) {
camera = Camera.open(0);
}
mSurfaceHolder = surface_view.getHolder();
mSurfaceHolder.addCallback(this);
mSurfaceHolder.setType(3);
mThread = new HandlerThread("light");
mThread.start();
open.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (isOpen) {
open.setBackgroundResource(R.drawable.poweroff);
turnOff();
} else {
open.setBackgroundResource(R.drawable.poweron);
turnOn();
}
}
});
}
catch (Exception e)
{
//Toast.makeText(this, "该手机未适配", Toast.LENGTH_SHORT).show();
}
}
private void turnOn() {
if (!isOpen) {
isOpen = true;
Camera.Parameters mParameters = camera.getParameters();
mParameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
camera.setParameters(mParameters);
camera.startPreview();
}
}
private void turnOff() {
isOpen = false;
Camera.Parameters mParameters = camera.getParameters();
mParameters.setFlashMode("off");
camera.setParameters(mParameters);
camera.setPreviewCallback(null);
camera.stopPreview();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (camera != null) {
camera.stopPreview();
camera.release();
camera = null;
}
if (mThread != null) {
mThread.quit();
return;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (isOpen) {
camera.release();
}
camera = null;
finish();
android.os.Process.killProcess(android.os.Process.myPid());// 关闭进程
return true;
}
return super.onKeyDown(keyCode, event);
}
private BroadcastReceiver batteryReceiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent)
{
int level = intent.getIntExtra("level", 0);
if (level > 60) {
electric.setBackgroundResource(R.drawable.battery1);
} else if (level > 30) {
electric.setBackgroundResource(R.drawable.battery2);
} else {
electric.setBackgroundResource(R.drawable.battery3);
}
electric.setText(level "%");
}
};
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
camera.setPreviewDisplay(mSurfaceHolder);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
private ArrayList getImages() {
ArrayList images = new ArrayList();
images.add(new ImageBean(R.drawable.icon_8, R.drawable.bg_8));
images.add(new ImageBean(R.drawable.icon_2, R.drawable.bg_22));
images.add(new ImageBean(R.drawable.icon_7, R.drawable.bg_7));
images.add(new ImageBean(R.drawable.icon_3, R.drawable.bg_3));
images.add(new ImageBean(R.drawable.icon_6, R.drawable.bg_6));
images.add(new ImageBean(R.drawable.icon_4, R.drawable.bg_4));
images.add(new ImageBean(R.drawable.icon_5, R.drawable.bg_5));
return images;
}
private void savePosition(int position) {
SharedPreferences share = getSharedPreferences("bg_positin", 0);
Editor editor = share.edit();
editor.putInt("position", position);
editor.commit();
}
private int getPositin() {
SharedPreferences share = getSharedPreferences("bg_positin", 0);
return share.getInt("position", 0);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 1, 1, "关于");
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == 1) {
showAbout();
}
return true;
}
private void showAbout() {
new AlertDialog.Builder(this)
.setTitle("关于")
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage("作者：贾永华\nQ Q :1048922801\n邮箱 :[email protected]")
.setPositiveButton("确定", null).show();
}
}