Created
June 7, 2018 12:12
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Main Activity for the Lock Screen Device App on the SSaurel's Channel
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package com.ssaurel.lockdevice; | |
import android.app.Activity; | |
import android.app.admin.DevicePolicyManager; | |
import android.content.ComponentName; | |
import android.content.Intent; | |
import android.os.Bundle; | |
import android.support.v7.app.AppCompatActivity; | |
import android.view.View; | |
import android.widget.Button; | |
import android.widget.Toast; | |
public class MainActivity extends AppCompatActivity implements View.OnClickListener{ | |
private Button lock, disable, enable; | |
public static final int RESULT_ENABLE = 11; | |
private DevicePolicyManager devicePolicyManager; | |
private ComponentName compName; | |
@Override | |
public void onCreate(Bundle savedInstanceState) { | |
super.onCreate(savedInstanceState); | |
setContentView(R.layout.activity_main); | |
devicePolicyManager = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE); | |
compName = new ComponentName(this, MyAdmin.class); | |
lock = (Button) findViewById(R.id.lock); | |
enable = (Button) findViewById(R.id.enableBtn); | |
disable = (Button) findViewById(R.id.disableBtn); | |
lock.setOnClickListener(this); | |
enable.setOnClickListener(this); | |
disable.setOnClickListener(this); | |
} | |
@Override | |
protected void onResume() { | |
super.onResume(); | |
boolean isActive = devicePolicyManager.isAdminActive(compName); | |
disable.setVisibility(isActive ? View.VISIBLE : View.GONE); | |
enable.setVisibility(isActive ? View.GONE : View.VISIBLE); | |
} | |
@Override | |
public void onClick(View view) { | |
if (view == lock) { | |
boolean active = devicePolicyManager.isAdminActive(compName); | |
if (active) { | |
devicePolicyManager.lockNow(); | |
} else { | |
Toast.makeText(this, "You need to enable the Admin Device Features", Toast.LENGTH_SHORT).show(); | |
} | |
} else if (view == enable) { | |
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN); | |
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, compName); | |
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "Additional text explaining why we need this permission"); | |
startActivityForResult(intent, RESULT_ENABLE); | |
} else if (view == disable) { | |
devicePolicyManager.removeActiveAdmin(compName); | |
disable.setVisibility(View.GONE); | |
enable.setVisibility(View.VISIBLE); | |
} | |
} | |
@Override | |
protected void onActivityResult(int requestCode, int resultCode, Intent data) { | |
switch(requestCode) { | |
case RESULT_ENABLE : | |
if (resultCode == Activity.RESULT_OK) { | |
Toast.makeText(MainActivity.this, "You have enabled the Admin Device features", Toast.LENGTH_SHORT).show(); | |
} else { | |
Toast.makeText(MainActivity.this, "Problem to enable the Admin Device features", Toast.LENGTH_SHORT).show(); | |
} | |
break; | |
} | |
super.onActivityResult(requestCode, resultCode, data); | |
} | |
} |
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