LOG里大量出现 "Unexpected value from nativeGetEnabledTags: 0" 在logcat的过滤器的log message字段中输入以下过滤串 ^(?!.*(nativeGetEnabledTags)).*$

public class MainActivity extends Activity { String PASS = "myPassWord.txt"; Button addbtn, readbtn, modifybtn, savebtn; EditText addet, modifyet; TextView tv; ScrollView sv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); s...

public class MainActivity extends Activity { private TextView tv1, tv2, tv3, tv4, tv5, tv6, tv7, tv8, tv9, tv10, tv11, tv12, tv13, tv14; private EditText et1, et2, et3; private Button bt1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedIns...

public class Calculate { /** * @param args */ private final static char[] arrayoperate = { '+', '-', 'x', '/' }; public char getOperate() { Random rdm = new Random(); return arrayoperate[rdm.nextInt(4)]; } public int getData2() { Random rdm = new Random(); r...

SQLite 數據庫 　SQLite 版本控制類　SQLiteOpenHelper @Override onCreate();//只有在設備上不存在要獲取的數據庫時才會調用。 @Override onUpgrade(); // 在更新表結構時，　只需要修改構造方法中的數據庫版本號，并在onUpgrade()方法中更新表結構的 SQL語句。 **************************************************************************...

总结 总之Context在Android系统中的地位很重要，它几乎无所不能，但它也不是你想用就能随便用的，谨防使用不当引起的内存问题。如果还有疑问或者想了解更多内容，可以去看我的：视频课程 本文参考阅读： http://blog.csdn.net/guolin_blog/article/details/47028975 http://blog.csdn.net/yanbober/article/details/45967639 文／尹star（简书作者） 原文链接：http://www.jianshu.com/p/94e0f9ab3f1d 著作权归作者所有，转载请...

public class Httpthread extends Thread{ String url; WebView webView; Handler handler; public Httpthread(String url, WebView webView,Handler handler){ this.url=url; this.webView=webView; this.handler=handler; } public void run(){ try { URL httpUrl=new URL(url); t...

myweb = (WebView) findViewById(R.id.web);//找不到id时设置Project->Build Automatically, myweb.loadUrl("http://www.baidu.com");

public class MainActivity extends Activity implements OnClickListener { private TextView tv; private Button bt1; private Button bt2; private Button bt3; private Button bt4; private Button bt5; private Button bt6; private Button bt7; private Button bt8; private Button bt9; pr...

public class MyView extends View{ private int count=0; public MyView(Context context) { super(context); } public void onDraw(Canvas canvas){ int color = 0; switch(count){ case 0: color=Color.BLUE; break; case 1: color=Color.LTGRAY; break; case 2: c...

public class MainActivity extends AppCompatActivity { public Button firstButton; private Button secondButton; private SQLiteDB dbHelper; private final String dbName="helperdb"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedIn...

public class MainActivity extends Activity { private Button btn; private ProgressDialog dialog; //进度条 private MyAsyncTasck myAsyncTasck; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layo...

package com.example.postvalue; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class M...

package com.example.dialog; import android.os.Bundle; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.view.Menu; import...

public class MainActivity extends Activity { private Gallery gallery; private ImageSwitcher switcher; private List<Integer> lst; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); galle...

package com.example.android_12_28; import java.util.List; import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; public class OneImageAdapter extends BaseAdapter { private List<I...

public class MainActivity extends Activity { private ListView listView; private List<User> userList; private List<String> list; private List<String> list2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.lay...

public class MainActivity extends Activity { private MapView mMapView; private LocationClient locationClient; private BaiduMap baiduMap; private boolean firstLocation; private BitmapDescriptor mCurrentMarker; private MyLocationConfige...