我制作了一个小应用程序，可以使用我的应用程序，但是当我将我的代码带到我的真实应用程序中时，ıts不会返回任何内容。（我的旧应用程序最小SDK版本= 15新版本= API 23：Android 6.0）
/我的第一个应用
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//Intent intent = new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS);
//startActivity(intent);
//GetStatus();
TextView textView = (TextView) findViewById(R.id.text_view);
textView.setText("APP USTAGE");
Button button= (Button)findViewById(R.id.But_3);
button.setOnClickListener(this);
}
}
@Override
public void onClick(View v)
{
int HoursBefore = -2;
System.out.println("1--------------------------");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
EditText tmpx = findViewById(R.id.editText2);
HoursBefore = parseInt(String.valueOf(tmpx.getText()));
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
GetStatus(HoursBefore);
System.out.println(" saat degeri : " + HoursBefore);
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public void GetStatus(int HoursBefore){
final UsageStatsManager usageStatsManager = (UsageStatsManager) getSystemService(Context.USAGE_STATS_SERVICE);// Context.USAGE_STATS_SERVICE);
Calendar StartCla = Calendar.getInstance();
StartCla.add(Calendar.HOUR, -HoursBefore);
Calendar EndCla = Calendar.getInstance();
final List<UsageStats> queryUsageStats = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, StartCla.getTimeInMillis(), EndCla.getTimeInMillis());
System.out.println("\n\n--------------------------------------------------------------------------------------------------------------------------------------------\n\n");
String res = "";
Date time1 , time2 ;
for (UsageStats app : queryUsageStats) {
if((float) (app.getTotalTimeInForeground() / 1000) != 0){
System.out.println("-------> "+app.getPackageName() + " | " + (float) (app.getTotalTimeInForeground() / 1000));
time1 = new java.util.Date(app.getLastTimeStamp());
time2 = new java.util.Date(app.getLastTimeStamp()-(app.getTotalTimeInForeground()));
res += app.getPackageName() +" -> \n"+
time1.getHours()+ " : " + time1.getMinutes() + ":" + time1.getSeconds() + " |-| " + time2.getHours()+ " : " + time2.getMinutes() + ":" + time2.getSeconds()+ "\n"+
+ time1.getDay() + "." + time1.getMonth()+"."+( 1900 + time1.getYear()) + " |-| " + time2.getDay() + "." + time2.getMonth()+"."+( 1900 + time2.getYear()) + "\n"
+ " -- " + app.getTotalTimeInForeground() / 1000 + "\n";
}
}
System.out.println("--------------------------------------------------------------------------------------------------------------------------------------------\n\n");
TextView textView = (TextView) findViewById(R.id.text_view);
textView.setText(res);
textView.setMovementMethod(new ScrollingMovementMethod());
}
}
/我的2.应用
public class OperationCenter {
public static int RaportTimeHour = 10;// add to the save method
private Context cn;
public OperationCenter(Context con){
cn = con;
ProgramData.TakeWorkingDic(con.getFilesDir().toString());
LoadApp();
}
private boolean CheckNetworkStatus(){
return true;
}
public void TakeRaport(){
TakeAppUsageData();
}
public void StartSpyService(){
}
public void StopSpyService(){
}
private UsageRaport TakeAppUsageData(){
final UsageStatsManager usageStatsManager = (UsageStatsManager) cn.getSystemService(Context.USAGE_STATS_SERVICE);// Context.USAGE_STATS_SERVICE);
Calendar StartCla = Calendar.getInstance();
StartCla.add(Calendar.HOUR, -RaportTimeHour);
Calendar EndCla = Calendar.getInstance();
final List<UsageStats> queryUsageStats = usageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, StartCla.getTimeInMillis(), EndCla.getTimeInMillis());
String tmp = StartCla.getTime().getHours() + " - " + EndCla.getTime().getHours() ;
Log.i("rap",tmp);
String res = "";
Date time1 , time2 ;
for (UsageStats app : queryUsageStats){
if((float) (app.getTotalTimeInForeground() / 1000) != 0){
time1 = new java.util.Date(app.getLastTimeStamp());
time2 = new java.util.Date(app.getLastTimeStamp()-(app.getTotalTimeInForeground()));
Log.i("rap",app.getPackageName() +" -> \n"+
time1.getHours()+ " : " + time1.getMinutes() + ":" + time1.getSeconds() + " |-| " + time2.getHours()+ " : " + time2.getMinutes() + ":" + time2.getSeconds()+ "\n"+
+ time1.getDay() + "." + time1.getMonth()+"."+( 1900 + time1.getYear()) + " |-| " + time2.getDay() + "." + time2.getMonth()+"."+( 1900 + time2.getYear()) + "\n"
+ " -- " + app.getTotalTimeInForeground() / 1000 + "\n");
}
}
Log.i("rap","---------------------------------------------------------------------------------------------------");
//Log.i("rap",res);
Log.i("rap","---------------------------------------------------------------------------------------------------");
return null;
}
public void SaveApp(){
}
public void LoadApp(){
ProgramData.LoadMyData();
}
}