实例介绍
【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<ImageBean> 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(); } } /** * 打开手电筒 */ private void turnOn() { if (!isOpen) { isOpen = true; Camera.Parameters mParameters = camera.getParameters(); mParameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH); camera.setParameters(mParameters); camera.startPreview(); } } /** * 关闭手电筒 */ 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<ImageBean> getImages() { ArrayList<ImageBean> images = new ArrayList<ImageBean>(); 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 :divehome@163.com") .setPositiveButton("确定", null).show(); } }
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