View a Fullscreen image after onClick button
I'm developing my first app so I'm a newbie of Android programming.
I have a button that will turn off my screen with the command
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
but the command takes about 2 seconds to turn off de screen.
So I want that immediately after clicking on the button, before launching the screen-off command will be showed a fullscreen black image, to simulate the screen off. Maybe after launching the command, with a little delay of 5seconds I have to take the image away. How can I do?
android asked Nov 10 at 23:52
Nico Weide Zangirolami
82
add a comment |
I'm developing my first app so I'm a newbie of Android programming.
I have a button that will turn off my screen with the command
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
but the command takes about 2 seconds to turn off de screen.
So I want that immediately after clicking on the button, before launching the screen-off command will be showed a fullscreen black image, to simulate the screen off. Maybe after launching the command, with a little delay of 5seconds I have to take the image away. How can I do?
android asked Nov 10 at 23:52
Nico Weide Zangirolami
82
add a comment |
I'm developing my first app so I'm a newbie of Android programming.
I have a button that will turn off my screen with the command
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
but the command takes about 2 seconds to turn off de screen.
So I want that immediately after clicking on the button, before launching the screen-off command will be showed a fullscreen black image, to simulate the screen off. Maybe after launching the command, with a little delay of 5seconds I have to take the image away. How can I do?
android asked Nov 10 at 23:52
Nico Weide Zangirolami
82
I'm developing my first app so I'm a newbie of Android programming.
I have a button that will turn off my screen with the command
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
but the command takes about 2 seconds to turn off de screen.
So I want that immediately after clicking on the button, before launching the screen-off command will be showed a fullscreen black image, to simulate the screen off. Maybe after launching the command, with a little delay of 5seconds I have to take the image away. How can I do?
android android asked Nov 10 at 23:52
Nico Weide Zangirolami
82
asked Nov 10 at 23:52
Nico Weide Zangirolami
82
asked Nov 10 at 23:52
Nico Weide Zangirolami
82
asked Nov 10 at 23:52
Nico Weide Zangirolami
82
asked Nov 10 at 23:52
Nico Weide Zangirolami
82
82
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Firstly, prepare an ImageView in your layout xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@color/colorAccent" />
</android.support.constraint.ConstraintLayout>
notice set the initial visibility of ImageView is gone.
Then in the OnClickListener of button:
yourImageView.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
yourImageView.setVisibility(View.GONE);
}
}, 5000); //after 5 seconds
answered Nov 11 at 0:11
navylover
3,32021118
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Firstly, prepare an ImageView in your layout xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@color/colorAccent" />
</android.support.constraint.ConstraintLayout>
notice set the initial visibility of ImageView is gone.
Then in the OnClickListener of button:
yourImageView.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
yourImageView.setVisibility(View.GONE);
}
}, 5000); //after 5 seconds
answered Nov 11 at 0:11
navylover
3,32021118
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
add a comment |
Firstly, prepare an ImageView in your layout xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@color/colorAccent" />
</android.support.constraint.ConstraintLayout>
notice set the initial visibility of ImageView is gone.
Then in the OnClickListener of button:
yourImageView.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
yourImageView.setVisibility(View.GONE);
}
}, 5000); //after 5 seconds
answered Nov 11 at 0:11
navylover
3,32021118
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
add a comment |
Firstly, prepare an ImageView in your layout xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@color/colorAccent" />
</android.support.constraint.ConstraintLayout>
notice set the initial visibility of ImageView is gone.
Then in the OnClickListener of button:
yourImageView.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
yourImageView.setVisibility(View.GONE);
}
}, 5000); //after 5 seconds
answered Nov 11 at 0:11
navylover
3,32021118
Firstly, prepare an ImageView in your layout xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<ImageView
android:id="@+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@color/colorAccent" />
</android.support.constraint.ConstraintLayout>
notice set the initial visibility of ImageView is gone.
Then in the OnClickListener of button:
yourImageView.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Process su = Runtime.getRuntime().exec("su -c input keyevent 26");
yourImageView.setVisibility(View.GONE);
}
}, 5000); //after 5 seconds
answered Nov 11 at 0:11
navylover
3,32021118
answered Nov 11 at 0:11
navylover
3,32021118
answered Nov 11 at 0:11
navylover
3,32021118
answered Nov 11 at 0:11
navylover
3,32021118
3,32021118
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
add a comment |
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
1. ImageView is now match_parent and it keeps Titlebar and system StatusBar Visible (also NavigationBar for who has one). 2. Some buttons and switches on layout keeps being on top
– Nico Weide Zangirolami
Nov 11 at 1:21
add a comment |
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